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Finding the Fourth Proportional to 7,257.15, 10,866.17 and 3,787.11

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Solution

The fourth proportional to 7,257.15, 10,866.17 and 3,787.11 is: 5,670.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,257.15 : 10,866.17 = 3,787.11 : x
  2. Step 2: Convert to fraction form
    7,257.15/10,866.17 = 3,787.11/x
  3. Step 3: Cross multiply
    7,257.15x = 10,866.17 × 3,787.11
  4. Step 4: Simplify right side
    7,257.15x = 41,151,390.54
  5. Step 5: Solve for x
    x = 41,151,390.54/7,257.15
  6. Step 6: Final answer
    x = 5,670.46

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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.