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Finding the Fourth Proportional to 8,981, 12,393.77 and 5,002.08

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Solution

The fourth proportional to 8,981, 12,393.77 and 5,002.08 is: 6,902.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,981 : 12,393.77 = 5,002.08 : x
  2. Step 2: Convert to fraction form
    8,981/12,393.77 = 5,002.08/x
  3. Step 3: Cross multiply
    8,981x = 12,393.77 × 5,002.08
  4. Step 4: Simplify right side
    8,981x = 61,994,629.04
  5. Step 5: Solve for x
    x = 61,994,629.04/8,981
  6. Step 6: Final answer
    x = 6,902.86

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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.