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Finding the Fourth Proportional to 7,938.60, 11,849.25 and 7,446.12

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Solution

The fourth proportional to 7,938.60, 11,849.25 and 7,446.12 is: 11,114.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,938.60 : 11,849.25 = 7,446.12 : x
  2. Step 2: Convert to fraction form
    7,938.60/11,849.25 = 7,446.12/x
  3. Step 3: Cross multiply
    7,938.60x = 11,849.25 × 7,446.12
  4. Step 4: Simplify right side
    7,938.60x = 88,230,937.41
  5. Step 5: Solve for x
    x = 88,230,937.41/7,938.60
  6. Step 6: Final answer
    x = 11,114.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.