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Finding the Fourth Proportional to 8,169.01, 12,252.80 and 2,620.87

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Solution

The fourth proportional to 8,169.01, 12,252.80 and 2,620.87 is: 3,931.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,169.01 : 12,252.80 = 2,620.87 : x
  2. Step 2: Convert to fraction form
    8,169.01/12,252.80 = 2,620.87/x
  3. Step 3: Cross multiply
    8,169.01x = 12,252.80 × 2,620.87
  4. Step 4: Simplify right side
    8,169.01x = 32,112,971.86
  5. Step 5: Solve for x
    x = 32,112,971.86/8,169.01
  6. Step 6: Final answer
    x = 3,931.07

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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.