Home / 8,976.80-12,367.92-6,735.20

Finding the Fourth Proportional to 8,976.80, 12,367.92 and 6,735.20

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Solution

The fourth proportional to 8,976.80, 12,367.92 and 6,735.20 is: 9,279.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,976.80 : 12,367.92 = 6,735.20 : x
  2. Step 2: Convert to fraction form
    8,976.80/12,367.92 = 6,735.20/x
  3. Step 3: Cross multiply
    8,976.80x = 12,367.92 × 6,735.20
  4. Step 4: Simplify right side
    8,976.80x = 83,300,414.78
  5. Step 5: Solve for x
    x = 83,300,414.78/8,976.80
  6. Step 6: Final answer
    x = 9,279.52

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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.