Home / 7,116.24-9,820.38-3,972.42

Finding the Fourth Proportional to 7,116.24, 9,820.38 and 3,972.42

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Solution

The fourth proportional to 7,116.24, 9,820.38 and 3,972.42 is: 5,481.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,116.24 : 9,820.38 = 3,972.42 : x
  2. Step 2: Convert to fraction form
    7,116.24/9,820.38 = 3,972.42/x
  3. Step 3: Cross multiply
    7,116.24x = 9,820.38 × 3,972.42
  4. Step 4: Simplify right side
    7,116.24x = 39,010,673.92
  5. Step 5: Solve for x
    x = 39,010,673.92/7,116.24
  6. Step 6: Final answer
    x = 5,481.92

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1.5x scale

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.