Home / 2,979.20-4,468.80-1,335.80

Finding the Fourth Proportional to 2,979.20, 4,468.80 and 1,335.80

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Solution

The fourth proportional to 2,979.20, 4,468.80 and 1,335.80 is: 2,003.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,979.20 : 4,468.80 = 1,335.80 : x
  2. Step 2: Convert to fraction form
    2,979.20/4,468.80 = 1,335.80/x
  3. Step 3: Cross multiply
    2,979.20x = 4,468.80 × 1,335.80
  4. Step 4: Simplify right side
    2,979.20x = 5,969,423.04
  5. Step 5: Solve for x
    x = 5,969,423.04/2,979.20
  6. Step 6: Final answer
    x = 2,003.70

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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.