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Finding the Fourth Proportional to 8,851.78, 12,217.42 and 6,933.78

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Solution

The fourth proportional to 8,851.78, 12,217.42 and 6,933.78 is: 9,570.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,851.78 : 12,217.42 = 6,933.78 : x
  2. Step 2: Convert to fraction form
    8,851.78/12,217.42 = 6,933.78/x
  3. Step 3: Cross multiply
    8,851.78x = 12,217.42 × 6,933.78
  4. Step 4: Simplify right side
    8,851.78x = 84,712,902.45
  5. Step 5: Solve for x
    x = 84,712,902.45/8,851.78
  6. Step 6: Final answer
    x = 9,570.15

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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.