Home / 8,311.74-12,467.37-2,155.74

Finding the Fourth Proportional to 8,311.74, 12,467.37 and 2,155.74

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Solution

The fourth proportional to 8,311.74, 12,467.37 and 2,155.74 is: 3,233.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,311.74 : 12,467.37 = 2,155.74 : x
  2. Step 2: Convert to fraction form
    8,311.74/12,467.37 = 2,155.74/x
  3. Step 3: Cross multiply
    8,311.74x = 12,467.37 × 2,155.74
  4. Step 4: Simplify right side
    8,311.74x = 26,876,408.20
  5. Step 5: Solve for x
    x = 26,876,408.20/8,311.74
  6. Step 6: Final answer
    x = 3,233.55

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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.