Home / 8,218.16-11,339.88-4,680.80

Finding the Fourth Proportional to 8,218.16, 11,339.88 and 4,680.80

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Solution

The fourth proportional to 8,218.16, 11,339.88 and 4,680.80 is: 6,458.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,218.16 : 11,339.88 = 4,680.80 : x
  2. Step 2: Convert to fraction form
    8,218.16/11,339.88 = 4,680.80/x
  3. Step 3: Cross multiply
    8,218.16x = 11,339.88 × 4,680.80
  4. Step 4: Simplify right side
    8,218.16x = 53,079,710.30
  5. Step 5: Solve for x
    x = 53,079,710.30/8,218.16
  6. Step 6: Final answer
    x = 6,458.83

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Half scale
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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.