Home / 1,479.20-2,218.80-829.92

Finding the Fourth Proportional to 1,479.20, 2,218.80 and 829.92

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Solution

The fourth proportional to 1,479.20, 2,218.80 and 829.92 is: 1,244.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,479.20 : 2,218.80 = 829.92 : x
  2. Step 2: Convert to fraction form
    1,479.20/2,218.80 = 829.92/x
  3. Step 3: Cross multiply
    1,479.20x = 2,218.80 × 829.92
  4. Step 4: Simplify right side
    1,479.20x = 1,841,426.50
  5. Step 5: Solve for x
    x = 1,841,426.50/1,479.20
  6. Step 6: Final answer
    x = 1,244.88

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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.