Home / 1,687.88-2,527.77-1,319.60

Finding the Fourth Proportional to 1,687.88, 2,527.77 and 1,319.60

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Solution

The fourth proportional to 1,687.88, 2,527.77 and 1,319.60 is: 1,976.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,687.88 : 2,527.77 = 1,319.60 : x
  2. Step 2: Convert to fraction form
    1,687.88/2,527.77 = 1,319.60/x
  3. Step 3: Cross multiply
    1,687.88x = 2,527.77 × 1,319.60
  4. Step 4: Simplify right side
    1,687.88x = 3,335,645.29
  5. Step 5: Solve for x
    x = 3,335,645.29/1,687.88
  6. Step 6: Final answer
    x = 1,976.23

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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.