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Finding the Fourth Proportional to 8,774.78, 13,162.19 and 4,387.82

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Solution

The fourth proportional to 8,774.78, 13,162.19 and 4,387.82 is: 6,581.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,774.78 : 13,162.19 = 4,387.82 : x
  2. Step 2: Convert to fraction form
    8,774.78/13,162.19 = 4,387.82/x
  3. Step 3: Cross multiply
    8,774.78x = 13,162.19 × 4,387.82
  4. Step 4: Simplify right side
    8,774.78x = 57,753,320.53
  5. Step 5: Solve for x
    x = 57,753,320.53/8,774.78
  6. Step 6: Final answer
    x = 6,581.74

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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.