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Finding the Fourth Proportional to 8,391.93, 12,589.71 and 2,549.01

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Solution

The fourth proportional to 8,391.93, 12,589.71 and 2,549.01 is: 3,824.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,391.93 : 12,589.71 = 2,549.01 : x
  2. Step 2: Convert to fraction form
    8,391.93/12,589.71 = 2,549.01/x
  3. Step 3: Cross multiply
    8,391.93x = 12,589.71 × 2,549.01
  4. Step 4: Simplify right side
    8,391.93x = 32,091,296.69
  5. Step 5: Solve for x
    x = 32,091,296.69/8,391.93
  6. Step 6: Final answer
    x = 3,824.07

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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.