Home / 7,981.13-11,963.86-2,979.84

Finding the Fourth Proportional to 7,981.13, 11,963.86 and 2,979.84

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Solution

The fourth proportional to 7,981.13, 11,963.86 and 2,979.84 is: 4,466.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,981.13 : 11,963.86 = 2,979.84 : x
  2. Step 2: Convert to fraction form
    7,981.13/11,963.86 = 2,979.84/x
  3. Step 3: Cross multiply
    7,981.13x = 11,963.86 × 2,979.84
  4. Step 4: Simplify right side
    7,981.13x = 35,650,426.00
  5. Step 5: Solve for x
    x = 35,650,426.00/7,981.13
  6. Step 6: Final answer
    x = 4,466.84

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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.