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Finding the Fourth Proportional to 7,191.47, 10,787.17 and 2,193.83

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Solution

The fourth proportional to 7,191.47, 10,787.17 and 2,193.83 is: 3,290.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,191.47 : 10,787.17 = 2,193.83 : x
  2. Step 2: Convert to fraction form
    7,191.47/10,787.17 = 2,193.83/x
  3. Step 3: Cross multiply
    7,191.47x = 10,787.17 × 2,193.83
  4. Step 4: Simplify right side
    7,191.47x = 23,665,157.74
  5. Step 5: Solve for x
    x = 23,665,157.74/7,191.47
  6. Step 6: Final answer
    x = 3,290.73

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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.