Home / 7,116.24-9,820.40-3,929.52

Finding the Fourth Proportional to 7,116.24, 9,820.40 and 3,929.52

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Solution

The fourth proportional to 7,116.24, 9,820.40 and 3,929.52 is: 5,422.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,116.24 : 9,820.40 = 3,929.52 : x
  2. Step 2: Convert to fraction form
    7,116.24/9,820.40 = 3,929.52/x
  3. Step 3: Cross multiply
    7,116.24x = 9,820.40 × 3,929.52
  4. Step 4: Simplify right side
    7,116.24x = 38,589,458.21
  5. Step 5: Solve for x
    x = 38,589,458.21/7,116.24
  6. Step 6: Final answer
    x = 5,422.73

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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.