Home / 2,079.20-3,115.14-1,853.21

Finding the Fourth Proportional to 2,079.20, 3,115.14 and 1,853.21

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Solution

The fourth proportional to 2,079.20, 3,115.14 and 1,853.21 is: 2,776.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,079.20 : 3,115.14 = 1,853.21 : x
  2. Step 2: Convert to fraction form
    2,079.20/3,115.14 = 1,853.21/x
  3. Step 3: Cross multiply
    2,079.20x = 3,115.14 × 1,853.21
  4. Step 4: Simplify right side
    2,079.20x = 5,772,993.02
  5. Step 5: Solve for x
    x = 5,772,993.02/2,079.20
  6. Step 6: Final answer
    x = 2,776.55

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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.