Home / 8,279.60-11,425.82-4,742.80

Finding the Fourth Proportional to 8,279.60, 11,425.82 and 4,742.80

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Solution

The fourth proportional to 8,279.60, 11,425.82 and 4,742.80 is: 6,545.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,279.60 : 11,425.82 = 4,742.80 : x
  2. Step 2: Convert to fraction form
    8,279.60/11,425.82 = 4,742.80/x
  3. Step 3: Cross multiply
    8,279.60x = 11,425.82 × 4,742.80
  4. Step 4: Simplify right side
    8,279.60x = 54,190,379.10
  5. Step 5: Solve for x
    x = 54,190,379.10/8,279.60
  6. Step 6: Final answer
    x = 6,545.05

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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.