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Finding the Fourth Proportional to 7,390.59, 11,042.67 and 7,132.29

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Solution

The fourth proportional to 7,390.59, 11,042.67 and 7,132.29 is: 10,656.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,390.59 : 11,042.67 = 7,132.29 : x
  2. Step 2: Convert to fraction form
    7,390.59/11,042.67 = 7,132.29/x
  3. Step 3: Cross multiply
    7,390.59x = 11,042.67 × 7,132.29
  4. Step 4: Simplify right side
    7,390.59x = 78,759,524.81
  5. Step 5: Solve for x
    x = 78,759,524.81/7,390.59
  6. Step 6: Final answer
    x = 10,656.73

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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.