Home / 7,867.68-11,803.28-2,320.80

Finding the Fourth Proportional to 7,867.68, 11,803.28 and 2,320.80

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Solution

The fourth proportional to 7,867.68, 11,803.28 and 2,320.80 is: 3,481.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,867.68 : 11,803.28 = 2,320.80 : x
  2. Step 2: Convert to fraction form
    7,867.68/11,803.28 = 2,320.80/x
  3. Step 3: Cross multiply
    7,867.68x = 11,803.28 × 2,320.80
  4. Step 4: Simplify right side
    7,867.68x = 27,393,052.22
  5. Step 5: Solve for x
    x = 27,393,052.22/7,867.68
  6. Step 6: Final answer
    x = 3,481.72

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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.