Home / 7,440.12-11,160.31-3,489.21

Finding the Fourth Proportional to 7,440.12, 11,160.31 and 3,489.21

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Solution

The fourth proportional to 7,440.12, 11,160.31 and 3,489.21 is: 5,233.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,440.12 : 11,160.31 = 3,489.21 : x
  2. Step 2: Convert to fraction form
    7,440.12/11,160.31 = 3,489.21/x
  3. Step 3: Cross multiply
    7,440.12x = 11,160.31 × 3,489.21
  4. Step 4: Simplify right side
    7,440.12x = 38,940,665.26
  5. Step 5: Solve for x
    x = 38,940,665.26/7,440.12
  6. Step 6: Final answer
    x = 5,233.88

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1.5x scale

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.