Home / 6,448.92-9,679.26-3,988.52

Finding the Fourth Proportional to 6,448.92, 9,679.26 and 3,988.52

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Solution

The fourth proportional to 6,448.92, 9,679.26 and 3,988.52 is: 5,986.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,448.92 : 9,679.26 = 3,988.52 : x
  2. Step 2: Convert to fraction form
    6,448.92/9,679.26 = 3,988.52/x
  3. Step 3: Cross multiply
    6,448.92x = 9,679.26 × 3,988.52
  4. Step 4: Simplify right side
    6,448.92x = 38,605,922.10
  5. Step 5: Solve for x
    x = 38,605,922.10/6,448.92
  6. Step 6: Final answer
    x = 5,986.42

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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.