Home / 7,071.20-9,757.12-3,927.36

Finding the Fourth Proportional to 7,071.20, 9,757.12 and 3,927.36

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Solution

The fourth proportional to 7,071.20, 9,757.12 and 3,927.36 is: 5,419.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,071.20 : 9,757.12 = 3,927.36 : x
  2. Step 2: Convert to fraction form
    7,071.20/9,757.12 = 3,927.36/x
  3. Step 3: Cross multiply
    7,071.20x = 9,757.12 × 3,927.36
  4. Step 4: Simplify right side
    7,071.20x = 38,319,722.80
  5. Step 5: Solve for x
    x = 38,319,722.80/7,071.20
  6. Step 6: Final answer
    x = 5,419.13

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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.