Home / 9,478.13-13,079.81-5,286.38

Finding the Fourth Proportional to 9,478.13, 13,079.81 and 5,286.38

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Solution

The fourth proportional to 9,478.13, 13,079.81 and 5,286.38 is: 7,295.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,478.13 : 13,079.81 = 5,286.38 : x
  2. Step 2: Convert to fraction form
    9,478.13/13,079.81 = 5,286.38/x
  3. Step 3: Cross multiply
    9,478.13x = 13,079.81 × 5,286.38
  4. Step 4: Simplify right side
    9,478.13x = 69,144,793.80
  5. Step 5: Solve for x
    x = 69,144,793.80/9,478.13
  6. Step 6: Final answer
    x = 7,295.20

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Similar ratio
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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.