Home / 6,449.31-9,680.03-3,988.94

Finding the Fourth Proportional to 6,449.31, 9,680.03 and 3,988.94

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Solution

The fourth proportional to 6,449.31, 9,680.03 and 3,988.94 is: 5,987.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,449.31 : 9,680.03 = 3,988.94 : x
  2. Step 2: Convert to fraction form
    6,449.31/9,680.03 = 3,988.94/x
  3. Step 3: Cross multiply
    6,449.31x = 9,680.03 × 3,988.94
  4. Step 4: Simplify right side
    6,449.31x = 38,612,990.52
  5. Step 5: Solve for x
    x = 38,612,990.52/6,449.31
  6. Step 6: Final answer
    x = 5,987.15

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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.