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Finding the Fourth Proportional to 8,368.86, 11,542.32 and 7,425.30

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Solution

The fourth proportional to 8,368.86, 11,542.32 and 7,425.30 is: 10,240.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,368.86 : 11,542.32 = 7,425.30 : x
  2. Step 2: Convert to fraction form
    8,368.86/11,542.32 = 7,425.30/x
  3. Step 3: Cross multiply
    8,368.86x = 11,542.32 × 7,425.30
  4. Step 4: Simplify right side
    8,368.86x = 85,705,188.70
  5. Step 5: Solve for x
    x = 85,705,188.70/8,368.86
  6. Step 6: Final answer
    x = 10,240.96

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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.