Home / 8,316.17-12,460.55-7,458.78

Finding the Fourth Proportional to 8,316.17, 12,460.55 and 7,458.78

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Solution

The fourth proportional to 8,316.17, 12,460.55 and 7,458.78 is: 11,175.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,316.17 : 12,460.55 = 7,458.78 : x
  2. Step 2: Convert to fraction form
    8,316.17/12,460.55 = 7,458.78/x
  3. Step 3: Cross multiply
    8,316.17x = 12,460.55 × 7,458.78
  4. Step 4: Simplify right side
    8,316.17x = 92,940,463.84
  5. Step 5: Solve for x
    x = 92,940,463.84/8,316.17
  6. Step 6: Final answer
    x = 11,175.88

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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.