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Finding the Fourth Proportional to 9,374.13, 12,936.31 and 5,182.38

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Solution

The fourth proportional to 9,374.13, 12,936.31 and 5,182.38 is: 7,151.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,374.13 : 12,936.31 = 5,182.38 : x
  2. Step 2: Convert to fraction form
    9,374.13/12,936.31 = 5,182.38/x
  3. Step 3: Cross multiply
    9,374.13x = 12,936.31 × 5,182.38
  4. Step 4: Simplify right side
    9,374.13x = 67,040,874.22
  5. Step 5: Solve for x
    x = 67,040,874.22/9,374.13
  6. Step 6: Final answer
    x = 7,151.69

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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.