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Finding the Fourth Proportional to 4,899.74, 6,757.16 and 3,220.48

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Solution

The fourth proportional to 4,899.74, 6,757.16 and 3,220.48 is: 4,441.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,899.74 : 6,757.16 = 3,220.48 : x
  2. Step 2: Convert to fraction form
    4,899.74/6,757.16 = 3,220.48/x
  3. Step 3: Cross multiply
    4,899.74x = 6,757.16 × 3,220.48
  4. Step 4: Simplify right side
    4,899.74x = 21,761,298.64
  5. Step 5: Solve for x
    x = 21,761,298.64/4,899.74
  6. Step 6: Final answer
    x = 4,441.32

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Half scale
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Double scale
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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.