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Finding the Fourth Proportional to 10,079.28, 15,118.86 and 3,923.28

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Solution

The fourth proportional to 10,079.28, 15,118.86 and 3,923.28 is: 5,884.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,079.28 : 15,118.86 = 3,923.28 : x
  2. Step 2: Convert to fraction form
    10,079.28/15,118.86 = 3,923.28/x
  3. Step 3: Cross multiply
    10,079.28x = 15,118.86 × 3,923.28
  4. Step 4: Simplify right side
    10,079.28x = 59,315,521.06
  5. Step 5: Solve for x
    x = 59,315,521.06/10,079.28
  6. Step 6: Final answer
    x = 5,884.90

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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.