Home / 8,115.46-12,160.59-6,161.74

Finding the Fourth Proportional to 8,115.46, 12,160.59 and 6,161.74

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Solution

The fourth proportional to 8,115.46, 12,160.59 and 6,161.74 is: 9,233.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,115.46 : 12,160.59 = 6,161.74 : x
  2. Step 2: Convert to fraction form
    8,115.46/12,160.59 = 6,161.74/x
  3. Step 3: Cross multiply
    8,115.46x = 12,160.59 × 6,161.74
  4. Step 4: Simplify right side
    8,115.46x = 74,930,393.83
  5. Step 5: Solve for x
    x = 74,930,393.83/8,115.46
  6. Step 6: Final answer
    x = 9,233.04

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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.