Home / 8,881.11-12,279.30-8,740.78

Finding the Fourth Proportional to 8,881.11, 12,279.30 and 8,740.78

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Solution

The fourth proportional to 8,881.11, 12,279.30 and 8,740.78 is: 12,085.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,881.11 : 12,279.30 = 8,740.78 : x
  2. Step 2: Convert to fraction form
    8,881.11/12,279.30 = 8,740.78/x
  3. Step 3: Cross multiply
    8,881.11x = 12,279.30 × 8,740.78
  4. Step 4: Simplify right side
    8,881.11x = 107,330,596.38
  5. Step 5: Solve for x
    x = 107,330,596.38/8,881.11
  6. Step 6: Final answer
    x = 12,085.27

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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.