Home / 8,857.46-12,221.61-5,319.38

Finding the Fourth Proportional to 8,857.46, 12,221.61 and 5,319.38

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Solution

The fourth proportional to 8,857.46, 12,221.61 and 5,319.38 is: 7,339.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,857.46 : 12,221.61 = 5,319.38 : x
  2. Step 2: Convert to fraction form
    8,857.46/12,221.61 = 5,319.38/x
  3. Step 3: Cross multiply
    8,857.46x = 12,221.61 × 5,319.38
  4. Step 4: Simplify right side
    8,857.46x = 65,011,387.80
  5. Step 5: Solve for x
    x = 65,011,387.80/8,857.46
  6. Step 6: Final answer
    x = 7,339.73

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Half scale
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Double scale
Find fourth proportional to 8,858.46, 12,222.99 and 5,320.38
Similar ratio
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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.