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Finding the Fourth Proportional to 8,862.86, 12,230.88 and 5,086.64

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Solution

The fourth proportional to 8,862.86, 12,230.88 and 5,086.64 is: 7,019.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,862.86 : 12,230.88 = 5,086.64 : x
  2. Step 2: Convert to fraction form
    8,862.86/12,230.88 = 5,086.64/x
  3. Step 3: Cross multiply
    8,862.86x = 12,230.88 × 5,086.64
  4. Step 4: Simplify right side
    8,862.86x = 62,214,083.44
  5. Step 5: Solve for x
    x = 62,214,083.44/8,862.86
  6. Step 6: Final answer
    x = 7,019.64

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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.