Home / 8,391.24-12,586.92-5,487.96

Finding the Fourth Proportional to 8,391.24, 12,586.92 and 5,487.96

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Solution

The fourth proportional to 8,391.24, 12,586.92 and 5,487.96 is: 8,231.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,391.24 : 12,586.92 = 5,487.96 : x
  2. Step 2: Convert to fraction form
    8,391.24/12,586.92 = 5,487.96/x
  3. Step 3: Cross multiply
    8,391.24x = 12,586.92 × 5,487.96
  4. Step 4: Simplify right side
    8,391.24x = 69,076,513.48
  5. Step 5: Solve for x
    x = 69,076,513.48/8,391.24
  6. Step 6: Final answer
    x = 8,231.98

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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.