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Finding the Fourth Proportional to 5,781.51, 8,664.71 and 2,321.19

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Solution

The fourth proportional to 5,781.51, 8,664.71 and 2,321.19 is: 3,478.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,781.51 : 8,664.71 = 2,321.19 : x
  2. Step 2: Convert to fraction form
    5,781.51/8,664.71 = 2,321.19/x
  3. Step 3: Cross multiply
    5,781.51x = 8,664.71 × 2,321.19
  4. Step 4: Simplify right side
    5,781.51x = 20,112,426.60
  5. Step 5: Solve for x
    x = 20,112,426.60/5,781.51
  6. Step 6: Final answer
    x = 3,478.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.