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Finding the Fourth Proportional to 8,806.80, 12,154.50 and 5,271.96

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Solution

The fourth proportional to 8,806.80, 12,154.50 and 5,271.96 is: 7,275.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,806.80 : 12,154.50 = 5,271.96 : x
  2. Step 2: Convert to fraction form
    8,806.80/12,154.50 = 5,271.96/x
  3. Step 3: Cross multiply
    8,806.80x = 12,154.50 × 5,271.96
  4. Step 4: Simplify right side
    8,806.80x = 64,078,037.82
  5. Step 5: Solve for x
    x = 64,078,037.82/8,806.80
  6. Step 6: Final answer
    x = 7,275.97

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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.