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Finding the Fourth Proportional to 7,130.96, 10,711.02 and 5,481.80

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Solution

The fourth proportional to 7,130.96, 10,711.02 and 5,481.80 is: 8,233.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,130.96 : 10,711.02 = 5,481.80 : x
  2. Step 2: Convert to fraction form
    7,130.96/10,711.02 = 5,481.80/x
  3. Step 3: Cross multiply
    7,130.96x = 10,711.02 × 5,481.80
  4. Step 4: Simplify right side
    7,130.96x = 58,715,669.44
  5. Step 5: Solve for x
    x = 58,715,669.44/7,130.96
  6. Step 6: Final answer
    x = 8,233.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.