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Finding the Fourth Proportional to 2,566.92, 3,542.34 and 1,387.99

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Solution

The fourth proportional to 2,566.92, 3,542.34 and 1,387.99 is: 1,915.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,566.92 : 3,542.34 = 1,387.99 : x
  2. Step 2: Convert to fraction form
    2,566.92/3,542.34 = 1,387.99/x
  3. Step 3: Cross multiply
    2,566.92x = 3,542.34 × 1,387.99
  4. Step 4: Simplify right side
    2,566.92x = 4,916,714.78
  5. Step 5: Solve for x
    x = 4,916,714.78/2,566.92
  6. Step 6: Final answer
    x = 1,915.42

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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.