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Finding the Fourth Proportional to 8,869.22, 13,312.02 and 4,489.76

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Solution

The fourth proportional to 8,869.22, 13,312.02 and 4,489.76 is: 6,738.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,869.22 : 13,312.02 = 4,489.76 : x
  2. Step 2: Convert to fraction form
    8,869.22/13,312.02 = 4,489.76/x
  3. Step 3: Cross multiply
    8,869.22x = 13,312.02 × 4,489.76
  4. Step 4: Simplify right side
    8,869.22x = 59,767,774.92
  5. Step 5: Solve for x
    x = 59,767,774.92/8,869.22
  6. Step 6: Final answer
    x = 6,738.79

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.