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Finding the Fourth Proportional to 3,657.78, 5,047.68 and 2,001.78

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Solution

The fourth proportional to 3,657.78, 5,047.68 and 2,001.78 is: 2,762.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,657.78 : 5,047.68 = 2,001.78 : x
  2. Step 2: Convert to fraction form
    3,657.78/5,047.68 = 2,001.78/x
  3. Step 3: Cross multiply
    3,657.78x = 5,047.68 × 2,001.78
  4. Step 4: Simplify right side
    3,657.78x = 10,104,344.87
  5. Step 5: Solve for x
    x = 10,104,344.87/3,657.78
  6. Step 6: Final answer
    x = 2,762.43

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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.