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Finding the Fourth Proportional to 8,856.63, 12,222 and 4,878.12

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Solution

The fourth proportional to 8,856.63, 12,222 and 4,878.12 is: 6,731.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,856.63 : 12,222 = 4,878.12 : x
  2. Step 2: Convert to fraction form
    8,856.63/12,222 = 4,878.12/x
  3. Step 3: Cross multiply
    8,856.63x = 12,222 × 4,878.12
  4. Step 4: Simplify right side
    8,856.63x = 59,620,321.53
  5. Step 5: Solve for x
    x = 59,620,321.53/8,856.63
  6. Step 6: Final answer
    x = 6,731.72

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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.