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Finding the Fourth Proportional to 4,809.84, 6,637.21 and 2,685.21

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Solution

The fourth proportional to 4,809.84, 6,637.21 and 2,685.21 is: 3,705.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,809.84 : 6,637.21 = 2,685.21 : x
  2. Step 2: Convert to fraction form
    4,809.84/6,637.21 = 2,685.21/x
  3. Step 3: Cross multiply
    4,809.84x = 6,637.21 × 2,685.21
  4. Step 4: Simplify right side
    4,809.84x = 17,822,302.66
  5. Step 5: Solve for x
    x = 17,822,302.66/4,809.84
  6. Step 6: Final answer
    x = 3,705.38

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Find fourth proportional to 2,404.92, 3,318.61 and 1,342.61
Half scale
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Double scale
Find fourth proportional to 4,810.84, 6,638.59 and 2,686.21
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.