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Finding the Fourth Proportional to 3,747.77, 5,172.15 and 2,154.92

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Solution

The fourth proportional to 3,747.77, 5,172.15 and 2,154.92 is: 2,973.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,747.77 : 5,172.15 = 2,154.92 : x
  2. Step 2: Convert to fraction form
    3,747.77/5,172.15 = 2,154.92/x
  3. Step 3: Cross multiply
    3,747.77x = 5,172.15 × 2,154.92
  4. Step 4: Simplify right side
    3,747.77x = 11,145,569.48
  5. Step 5: Solve for x
    x = 11,145,569.48/3,747.77
  6. Step 6: Final answer
    x = 2,973.92

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.