Home / 7,876.76-11,822.42-3,983.88

Finding the Fourth Proportional to 7,876.76, 11,822.42 and 3,983.88

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Solution

The fourth proportional to 7,876.76, 11,822.42 and 3,983.88 is: 5,979.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,876.76 : 11,822.42 = 3,983.88 : x
  2. Step 2: Convert to fraction form
    7,876.76/11,822.42 = 3,983.88/x
  3. Step 3: Cross multiply
    7,876.76x = 11,822.42 × 3,983.88
  4. Step 4: Simplify right side
    7,876.76x = 47,099,102.59
  5. Step 5: Solve for x
    x = 47,099,102.59/7,876.76
  6. Step 6: Final answer
    x = 5,979.50

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1.5x scale

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.