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Finding the Fourth Proportional to 9,374.61, 12,938.12 and 5,342.93

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Solution

The fourth proportional to 9,374.61, 12,938.12 and 5,342.93 is: 7,373.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,374.61 : 12,938.12 = 5,342.93 : x
  2. Step 2: Convert to fraction form
    9,374.61/12,938.12 = 5,342.93/x
  3. Step 3: Cross multiply
    9,374.61x = 12,938.12 × 5,342.93
  4. Step 4: Simplify right side
    9,374.61x = 69,127,469.49
  5. Step 5: Solve for x
    x = 69,127,469.49/9,374.61
  6. Step 6: Final answer
    x = 7,373.90

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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.