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Finding the Fourth Proportional to 2,520.77, 3,781.56 and 672.04

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Solution

The fourth proportional to 2,520.77, 3,781.56 and 672.04 is: 1,008.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,520.77 : 3,781.56 = 672.04 : x
  2. Step 2: Convert to fraction form
    2,520.77/3,781.56 = 672.04/x
  3. Step 3: Cross multiply
    2,520.77x = 3,781.56 × 672.04
  4. Step 4: Simplify right side
    2,520.77x = 2,541,350.13
  5. Step 5: Solve for x
    x = 2,541,350.13/2,520.77
  6. Step 6: Final answer
    x = 1,008.16

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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.