Home / 8,858.98-12,221.31-5,716.18

Finding the Fourth Proportional to 8,858.98, 12,221.31 and 5,716.18

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Solution

The fourth proportional to 8,858.98, 12,221.31 and 5,716.18 is: 7,885.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,858.98 : 12,221.31 = 5,716.18 : x
  2. Step 2: Convert to fraction form
    8,858.98/12,221.31 = 5,716.18/x
  3. Step 3: Cross multiply
    8,858.98x = 12,221.31 × 5,716.18
  4. Step 4: Simplify right side
    8,858.98x = 69,859,207.80
  5. Step 5: Solve for x
    x = 69,859,207.80/8,858.98
  6. Step 6: Final answer
    x = 7,885.69

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Half scale
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Double 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.