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Finding the Fourth Proportional to 7,213.52, 9,945.52 and 6,135.71

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Solution

The fourth proportional to 7,213.52, 9,945.52 and 6,135.71 is: 8,459.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,213.52 : 9,945.52 = 6,135.71 : x
  2. Step 2: Convert to fraction form
    7,213.52/9,945.52 = 6,135.71/x
  3. Step 3: Cross multiply
    7,213.52x = 9,945.52 × 6,135.71
  4. Step 4: Simplify right side
    7,213.52x = 61,022,761.45
  5. Step 5: Solve for x
    x = 61,022,761.45/7,213.52
  6. Step 6: Final answer
    x = 8,459.50

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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.