Home / 8,123.76-12,185.67-2,580.99

Finding the Fourth Proportional to 8,123.76, 12,185.67 and 2,580.99

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Solution

The fourth proportional to 8,123.76, 12,185.67 and 2,580.99 is: 3,871.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,123.76 : 12,185.67 = 2,580.99 : x
  2. Step 2: Convert to fraction form
    8,123.76/12,185.67 = 2,580.99/x
  3. Step 3: Cross multiply
    8,123.76x = 12,185.67 × 2,580.99
  4. Step 4: Simplify right side
    8,123.76x = 31,451,092.41
  5. Step 5: Solve for x
    x = 31,451,092.41/8,123.76
  6. Step 6: Final answer
    x = 3,871.49

Related Problems

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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.