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Finding the Fourth Proportional to 8,865.54, 12,234.51 and 6,878.79

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Solution

The fourth proportional to 8,865.54, 12,234.51 and 6,878.79 is: 9,492.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,865.54 : 12,234.51 = 6,878.79 : x
  2. Step 2: Convert to fraction form
    8,865.54/12,234.51 = 6,878.79/x
  3. Step 3: Cross multiply
    8,865.54x = 12,234.51 × 6,878.79
  4. Step 4: Simplify right side
    8,865.54x = 84,158,625.04
  5. Step 5: Solve for x
    x = 84,158,625.04/8,865.54
  6. Step 6: Final answer
    x = 9,492.78

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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.