Home / 9,086.40-13,629.60-5,789.70

Finding the Fourth Proportional to 9,086.40, 13,629.60 and 5,789.70

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Solution

The fourth proportional to 9,086.40, 13,629.60 and 5,789.70 is: 8,684.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,086.40 : 13,629.60 = 5,789.70 : x
  2. Step 2: Convert to fraction form
    9,086.40/13,629.60 = 5,789.70/x
  3. Step 3: Cross multiply
    9,086.40x = 13,629.60 × 5,789.70
  4. Step 4: Simplify right side
    9,086.40x = 78,911,295.12
  5. Step 5: Solve for x
    x = 78,911,295.12/9,086.40
  6. Step 6: Final answer
    x = 8,684.55

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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.