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Finding the Fourth Proportional to 1,872.57, 2,805.09 and 932.68

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Solution

The fourth proportional to 1,872.57, 2,805.09 and 932.68 is: 1,397.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,872.57 : 2,805.09 = 932.68 : x
  2. Step 2: Convert to fraction form
    1,872.57/2,805.09 = 932.68/x
  3. Step 3: Cross multiply
    1,872.57x = 2,805.09 × 932.68
  4. Step 4: Simplify right side
    1,872.57x = 2,616,256.60
  5. Step 5: Solve for x
    x = 2,616,256.60/1,872.57
  6. Step 6: Final answer
    x = 1,397.15

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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.