Home / 2,479.80-3,721.14-2,157.24

Finding the Fourth Proportional to 2,479.80, 3,721.14 and 2,157.24

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Solution

The fourth proportional to 2,479.80, 3,721.14 and 2,157.24 is: 3,237.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,479.80 : 3,721.14 = 2,157.24 : x
  2. Step 2: Convert to fraction form
    2,479.80/3,721.14 = 2,157.24/x
  3. Step 3: Cross multiply
    2,479.80x = 3,721.14 × 2,157.24
  4. Step 4: Simplify right side
    2,479.80x = 8,027,392.05
  5. Step 5: Solve for x
    x = 8,027,392.05/2,479.80
  6. Step 6: Final answer
    x = 3,237.11

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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.