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Finding the Fourth Proportional to 9,372.87, 12,934.53 and 5,181.12

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Solution

The fourth proportional to 9,372.87, 12,934.53 and 5,181.12 is: 7,149.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,372.87 : 12,934.53 = 5,181.12 : x
  2. Step 2: Convert to fraction form
    9,372.87/12,934.53 = 5,181.12/x
  3. Step 3: Cross multiply
    9,372.87x = 12,934.53 × 5,181.12
  4. Step 4: Simplify right side
    9,372.87x = 67,015,352.07
  5. Step 5: Solve for x
    x = 67,015,352.07/9,372.87
  6. Step 6: Final answer
    x = 7,149.93

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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.