Home / 8,108.76-11,187.51-6,401.86

Finding the Fourth Proportional to 8,108.76, 11,187.51 and 6,401.86

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Solution

The fourth proportional to 8,108.76, 11,187.51 and 6,401.86 is: 8,832.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,108.76 : 11,187.51 = 6,401.86 : x
  2. Step 2: Convert to fraction form
    8,108.76/11,187.51 = 6,401.86/x
  3. Step 3: Cross multiply
    8,108.76x = 11,187.51 × 6,401.86
  4. Step 4: Simplify right side
    8,108.76x = 71,620,872.77
  5. Step 5: Solve for x
    x = 71,620,872.77/8,108.76
  6. Step 6: Final answer
    x = 8,832.53

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Half scale
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Double scale
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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.