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Finding the Fourth Proportional to 8,806.65, 12,152.80 and 5,271.81

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Solution

The fourth proportional to 8,806.65, 12,152.80 and 5,271.81 is: 7,274.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,806.65 : 12,152.80 = 5,271.81 : x
  2. Step 2: Convert to fraction form
    8,806.65/12,152.80 = 5,271.81/x
  3. Step 3: Cross multiply
    8,806.65x = 12,152.80 × 5,271.81
  4. Step 4: Simplify right side
    8,806.65x = 64,067,252.57
  5. Step 5: Solve for x
    x = 64,067,252.57/8,806.65
  6. Step 6: Final answer
    x = 7,274.87

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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.