Home / 2,721.40-4,080.27-1,259.75

Finding the Fourth Proportional to 2,721.40, 4,080.27 and 1,259.75

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Solution

The fourth proportional to 2,721.40, 4,080.27 and 1,259.75 is: 1,888.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,721.40 : 4,080.27 = 1,259.75 : x
  2. Step 2: Convert to fraction form
    2,721.40/4,080.27 = 1,259.75/x
  3. Step 3: Cross multiply
    2,721.40x = 4,080.27 × 1,259.75
  4. Step 4: Simplify right side
    2,721.40x = 5,140,135.06
  5. Step 5: Solve for x
    x = 5,140,135.06/2,721.40
  6. Step 6: Final answer
    x = 1,888.79

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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.