Home / 8,989.92-12,401.28-5,842.80

Finding the Fourth Proportional to 8,989.92, 12,401.28 and 5,842.80

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Solution

The fourth proportional to 8,989.92, 12,401.28 and 5,842.80 is: 8,059.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,989.92 : 12,401.28 = 5,842.80 : x
  2. Step 2: Convert to fraction form
    8,989.92/12,401.28 = 5,842.80/x
  3. Step 3: Cross multiply
    8,989.92x = 12,401.28 × 5,842.80
  4. Step 4: Simplify right side
    8,989.92x = 72,458,198.78
  5. Step 5: Solve for x
    x = 72,458,198.78/8,989.92
  6. Step 6: Final answer
    x = 8,059.94

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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.