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Finding the Fourth Proportional to 2,424.92, 3,637.62 and 781.04

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Solution

The fourth proportional to 2,424.92, 3,637.62 and 781.04 is: 1,171.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,424.92 : 3,637.62 = 781.04 : x
  2. Step 2: Convert to fraction form
    2,424.92/3,637.62 = 781.04/x
  3. Step 3: Cross multiply
    2,424.92x = 3,637.62 × 781.04
  4. Step 4: Simplify right side
    2,424.92x = 2,841,126.72
  5. Step 5: Solve for x
    x = 2,841,126.72/2,424.92
  6. Step 6: Final answer
    x = 1,171.64

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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.