Home / 8,217.72-11,338.20-7,951.59

Finding the Fourth Proportional to 8,217.72, 11,338.20 and 7,951.59

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Solution

The fourth proportional to 8,217.72, 11,338.20 and 7,951.59 is: 10,971.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,217.72 : 11,338.20 = 7,951.59 : x
  2. Step 2: Convert to fraction form
    8,217.72/11,338.20 = 7,951.59/x
  3. Step 3: Cross multiply
    8,217.72x = 11,338.20 × 7,951.59
  4. Step 4: Simplify right side
    8,217.72x = 90,156,717.74
  5. Step 5: Solve for x
    x = 90,156,717.74/8,217.72
  6. Step 6: Final answer
    x = 10,971.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.