Home / 8,115.46-12,153.75-7,240.66

Finding the Fourth Proportional to 8,115.46, 12,153.75 and 7,240.66

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Solution

The fourth proportional to 8,115.46, 12,153.75 and 7,240.66 is: 10,843.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,115.46 : 12,153.75 = 7,240.66 : x
  2. Step 2: Convert to fraction form
    8,115.46/12,153.75 = 7,240.66/x
  3. Step 3: Cross multiply
    8,115.46x = 12,153.75 × 7,240.66
  4. Step 4: Simplify right side
    8,115.46x = 88,001,171.48
  5. Step 5: Solve for x
    x = 88,001,171.48/8,115.46
  6. Step 6: Final answer
    x = 10,843.65

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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.