Home / 8,161.76-12,246.47-5,666.78

Finding the Fourth Proportional to 8,161.76, 12,246.47 and 5,666.78

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Solution

The fourth proportional to 8,161.76, 12,246.47 and 5,666.78 is: 8,502.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,161.76 : 12,246.47 = 5,666.78 : x
  2. Step 2: Convert to fraction form
    8,161.76/12,246.47 = 5,666.78/x
  3. Step 3: Cross multiply
    8,161.76x = 12,246.47 × 5,666.78
  4. Step 4: Simplify right side
    8,161.76x = 69,397,961.70
  5. Step 5: Solve for x
    x = 69,397,961.70/8,161.76
  6. Step 6: Final answer
    x = 8,502.82

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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.