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Finding the Fourth Proportional to 3,663.78, 5,053.77 and 2,992.56

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Solution

The fourth proportional to 3,663.78, 5,053.77 and 2,992.56 is: 4,127.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,663.78 : 5,053.77 = 2,992.56 : x
  2. Step 2: Convert to fraction form
    3,663.78/5,053.77 = 2,992.56/x
  3. Step 3: Cross multiply
    3,663.78x = 5,053.77 × 2,992.56
  4. Step 4: Simplify right side
    3,663.78x = 15,123,709.95
  5. Step 5: Solve for x
    x = 15,123,709.95/3,663.78
  6. Step 6: Final answer
    x = 4,127.90

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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.