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Finding the Fourth Proportional to 8,986.68, 12,401.91 and 5,008.64

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Solution

The fourth proportional to 8,986.68, 12,401.91 and 5,008.64 is: 6,912.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,986.68 : 12,401.91 = 5,008.64 : x
  2. Step 2: Convert to fraction form
    8,986.68/12,401.91 = 5,008.64/x
  3. Step 3: Cross multiply
    8,986.68x = 12,401.91 × 5,008.64
  4. Step 4: Simplify right side
    8,986.68x = 62,116,640.49
  5. Step 5: Solve for x
    x = 62,116,640.49/8,986.68
  6. Step 6: Final answer
    x = 6,912.08

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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.