Home / 8,186.28-12,275.16-2,919.30

Finding the Fourth Proportional to 8,186.28, 12,275.16 and 2,919.30

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Solution

The fourth proportional to 8,186.28, 12,275.16 and 2,919.30 is: 4,377.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,186.28 : 12,275.16 = 2,919.30 : x
  2. Step 2: Convert to fraction form
    8,186.28/12,275.16 = 2,919.30/x
  3. Step 3: Cross multiply
    8,186.28x = 12,275.16 × 2,919.30
  4. Step 4: Simplify right side
    8,186.28x = 35,834,874.59
  5. Step 5: Solve for x
    x = 35,834,874.59/8,186.28
  6. Step 6: Final answer
    x = 4,377.43

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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.