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Finding the Fourth Proportional to 8,826.22, 12,179.16 and 5,239.90

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Solution

The fourth proportional to 8,826.22, 12,179.16 and 5,239.90 is: 7,230.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,826.22 : 12,179.16 = 5,239.90 : x
  2. Step 2: Convert to fraction form
    8,826.22/12,179.16 = 5,239.90/x
  3. Step 3: Cross multiply
    8,826.22x = 12,179.16 × 5,239.90
  4. Step 4: Simplify right side
    8,826.22x = 63,817,580.48
  5. Step 5: Solve for x
    x = 63,817,580.48/8,826.22
  6. Step 6: Final answer
    x = 7,230.45

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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.