Home / 6,279.60-9,419.40-3,815.14

Finding the Fourth Proportional to 6,279.60, 9,419.40 and 3,815.14

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Solution

The fourth proportional to 6,279.60, 9,419.40 and 3,815.14 is: 5,722.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,279.60 : 9,419.40 = 3,815.14 : x
  2. Step 2: Convert to fraction form
    6,279.60/9,419.40 = 3,815.14/x
  3. Step 3: Cross multiply
    6,279.60x = 9,419.40 × 3,815.14
  4. Step 4: Simplify right side
    6,279.60x = 35,936,329.72
  5. Step 5: Solve for x
    x = 35,936,329.72/6,279.60
  6. Step 6: Final answer
    x = 5,722.71

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Similar ratio
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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.