Home / 3,110.80-4,659.90-1,937.20

Finding the Fourth Proportional to 3,110.80, 4,659.90 and 1,937.20

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Solution

The fourth proportional to 3,110.80, 4,659.90 and 1,937.20 is: 2,901.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,110.80 : 4,659.90 = 1,937.20 : x
  2. Step 2: Convert to fraction form
    3,110.80/4,659.90 = 1,937.20/x
  3. Step 3: Cross multiply
    3,110.80x = 4,659.90 × 1,937.20
  4. Step 4: Simplify right side
    3,110.80x = 9,027,158.28
  5. Step 5: Solve for x
    x = 9,027,158.28/3,110.80
  6. Step 6: Final answer
    x = 2,901.88

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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.