Home / 7,127.20-10,696.38-5,743.90

Finding the Fourth Proportional to 7,127.20, 10,696.38 and 5,743.90

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Solution

The fourth proportional to 7,127.20, 10,696.38 and 5,743.90 is: 8,620.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,127.20 : 10,696.38 = 5,743.90 : x
  2. Step 2: Convert to fraction form
    7,127.20/10,696.38 = 5,743.90/x
  3. Step 3: Cross multiply
    7,127.20x = 10,696.38 × 5,743.90
  4. Step 4: Simplify right side
    7,127.20x = 61,438,937.08
  5. Step 5: Solve for x
    x = 61,438,937.08/7,127.20
  6. Step 6: Final answer
    x = 8,620.35

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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.