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Finding the Fourth Proportional to 8,223.70, 12,335.55 and 8,166.10

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Solution

The fourth proportional to 8,223.70, 12,335.55 and 8,166.10 is: 12,249.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,223.70 : 12,335.55 = 8,166.10 : x
  2. Step 2: Convert to fraction form
    8,223.70/12,335.55 = 8,166.10/x
  3. Step 3: Cross multiply
    8,223.70x = 12,335.55 × 8,166.10
  4. Step 4: Simplify right side
    8,223.70x = 100,733,334.86
  5. Step 5: Solve for x
    x = 100,733,334.86/8,223.70
  6. Step 6: Final answer
    x = 12,249.15

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Half scale
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Double scale
Find fourth proportional to 8,224.70, 12,337.05 and 8,167.10
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.