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Finding the Fourth Proportional to 8,811.13, 12,158.50 and 5,274.27

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Solution

The fourth proportional to 8,811.13, 12,158.50 and 5,274.27 is: 7,277.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,811.13 : 12,158.50 = 5,274.27 : x
  2. Step 2: Convert to fraction form
    8,811.13/12,158.50 = 5,274.27/x
  3. Step 3: Cross multiply
    8,811.13x = 12,158.50 × 5,274.27
  4. Step 4: Simplify right side
    8,811.13x = 64,127,211.80
  5. Step 5: Solve for x
    x = 64,127,211.80/8,811.13
  6. Step 6: Final answer
    x = 7,277.98

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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.