Home / 7,127.12-10,679.48-5,481.68

Finding the Fourth Proportional to 7,127.12, 10,679.48 and 5,481.68

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Solution

The fourth proportional to 7,127.12, 10,679.48 and 5,481.68 is: 8,213.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,127.12 : 10,679.48 = 5,481.68 : x
  2. Step 2: Convert to fraction form
    7,127.12/10,679.48 = 5,481.68/x
  3. Step 3: Cross multiply
    7,127.12x = 10,679.48 × 5,481.68
  4. Step 4: Simplify right side
    7,127.12x = 58,541,491.93
  5. Step 5: Solve for x
    x = 58,541,491.93/7,127.12
  6. Step 6: Final answer
    x = 8,213.91

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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.