Home / 2,979.80-4,470.30-2,496.20

Finding the Fourth Proportional to 2,979.80, 4,470.30 and 2,496.20

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Solution

The fourth proportional to 2,979.80, 4,470.30 and 2,496.20 is: 3,744.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,979.80 : 4,470.30 = 2,496.20 : x
  2. Step 2: Convert to fraction form
    2,979.80/4,470.30 = 2,496.20/x
  3. Step 3: Cross multiply
    2,979.80x = 4,470.30 × 2,496.20
  4. Step 4: Simplify right side
    2,979.80x = 11,158,762.86
  5. Step 5: Solve for x
    x = 11,158,762.86/2,979.80
  6. Step 6: Final answer
    x = 3,744.80

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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.