Home / 6,913.47-10,375.36-5,138.61

Finding the Fourth Proportional to 6,913.47, 10,375.36 and 5,138.61

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Solution

The fourth proportional to 6,913.47, 10,375.36 and 5,138.61 is: 7,711.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,913.47 : 10,375.36 = 5,138.61 : x
  2. Step 2: Convert to fraction form
    6,913.47/10,375.36 = 5,138.61/x
  3. Step 3: Cross multiply
    6,913.47x = 10,375.36 × 5,138.61
  4. Step 4: Simplify right side
    6,913.47x = 53,314,964.44
  5. Step 5: Solve for x
    x = 53,314,964.44/6,913.47
  6. Step 6: Final answer
    x = 7,711.75

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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.