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Finding the Fourth Proportional to 3,602.52, 5,403.78 and 2,781.99

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Solution

The fourth proportional to 3,602.52, 5,403.78 and 2,781.99 is: 4,172.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,602.52 : 5,403.78 = 2,781.99 : x
  2. Step 2: Convert to fraction form
    3,602.52/5,403.78 = 2,781.99/x
  3. Step 3: Cross multiply
    3,602.52x = 5,403.78 × 2,781.99
  4. Step 4: Simplify right side
    3,602.52x = 15,033,261.92
  5. Step 5: Solve for x
    x = 15,033,261.92/3,602.52
  6. Step 6: Final answer
    x = 4,172.99

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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.