Home / 4,221.15-6,331.57-1,299.38

Finding the Fourth Proportional to 4,221.15, 6,331.57 and 1,299.38

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Solution

The fourth proportional to 4,221.15, 6,331.57 and 1,299.38 is: 1,949.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,221.15 : 6,331.57 = 1,299.38 : x
  2. Step 2: Convert to fraction form
    4,221.15/6,331.57 = 1,299.38/x
  3. Step 3: Cross multiply
    4,221.15x = 6,331.57 × 1,299.38
  4. Step 4: Simplify right side
    4,221.15x = 8,227,080.52
  5. Step 5: Solve for x
    x = 8,227,080.52/4,221.15
  6. Step 6: Final answer
    x = 1,949.02

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.