Home / 8,919.73-12,281.13-6,788.43

Finding the Fourth Proportional to 8,919.73, 12,281.13 and 6,788.43

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Solution

The fourth proportional to 8,919.73, 12,281.13 and 6,788.43 is: 9,346.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,919.73 : 12,281.13 = 6,788.43 : x
  2. Step 2: Convert to fraction form
    8,919.73/12,281.13 = 6,788.43/x
  3. Step 3: Cross multiply
    8,919.73x = 12,281.13 × 6,788.43
  4. Step 4: Simplify right side
    8,919.73x = 83,369,591.33
  5. Step 5: Solve for x
    x = 83,369,591.33/8,919.73
  6. Step 6: Final answer
    x = 9,346.65

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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.