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Finding the Fourth Proportional to 8,981.39, 13,463.78 and 4,589.16

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Solution

The fourth proportional to 8,981.39, 13,463.78 and 4,589.16 is: 6,879.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,981.39 : 13,463.78 = 4,589.16 : x
  2. Step 2: Convert to fraction form
    8,981.39/13,463.78 = 4,589.16/x
  3. Step 3: Cross multiply
    8,981.39x = 13,463.78 × 4,589.16
  4. Step 4: Simplify right side
    8,981.39x = 61,787,462.81
  5. Step 5: Solve for x
    x = 61,787,462.81/8,981.39
  6. Step 6: Final answer
    x = 6,879.50

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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.