Home / 6,939.28-10,395.60-5,815.36

Finding the Fourth Proportional to 6,939.28, 10,395.60 and 5,815.36

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Solution

The fourth proportional to 6,939.28, 10,395.60 and 5,815.36 is: 8,711.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,939.28 : 10,395.60 = 5,815.36 : x
  2. Step 2: Convert to fraction form
    6,939.28/10,395.60 = 5,815.36/x
  3. Step 3: Cross multiply
    6,939.28x = 10,395.60 × 5,815.36
  4. Step 4: Simplify right side
    6,939.28x = 60,454,156.42
  5. Step 5: Solve for x
    x = 60,454,156.42/6,939.28
  6. Step 6: Final answer
    x = 8,711.88

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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.