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Finding the Fourth Proportional to 8,854.15, 12,180.85 and 8,608.18

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Solution

The fourth proportional to 8,854.15, 12,180.85 and 8,608.18 is: 11,842.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,854.15 : 12,180.85 = 8,608.18 : x
  2. Step 2: Convert to fraction form
    8,854.15/12,180.85 = 8,608.18/x
  3. Step 3: Cross multiply
    8,854.15x = 12,180.85 × 8,608.18
  4. Step 4: Simplify right side
    8,854.15x = 104,854,949.35
  5. Step 5: Solve for x
    x = 104,854,949.35/8,854.15
  6. Step 6: Final answer
    x = 11,842.46

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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.