Home / 8,286.80-11,431.98-5,775.08

Finding the Fourth Proportional to 8,286.80, 11,431.98 and 5,775.08

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Solution

The fourth proportional to 8,286.80, 11,431.98 and 5,775.08 is: 7,966.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,286.80 : 11,431.98 = 5,775.08 : x
  2. Step 2: Convert to fraction form
    8,286.80/11,431.98 = 5,775.08/x
  3. Step 3: Cross multiply
    8,286.80x = 11,431.98 × 5,775.08
  4. Step 4: Simplify right side
    8,286.80x = 66,020,599.06
  5. Step 5: Solve for x
    x = 66,020,599.06/8,286.80
  6. Step 6: Final answer
    x = 7,966.96

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Half scale
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Double scale
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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.