Home / 2,731.80-3,764.88-1,984.45

Finding the Fourth Proportional to 2,731.80, 3,764.88 and 1,984.45

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Solution

The fourth proportional to 2,731.80, 3,764.88 and 1,984.45 is: 2,734.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,731.80 : 3,764.88 = 1,984.45 : x
  2. Step 2: Convert to fraction form
    2,731.80/3,764.88 = 1,984.45/x
  3. Step 3: Cross multiply
    2,731.80x = 3,764.88 × 1,984.45
  4. Step 4: Simplify right side
    2,731.80x = 7,471,216.12
  5. Step 5: Solve for x
    x = 7,471,216.12/2,731.80
  6. Step 6: Final answer
    x = 2,734.91

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.