Home / 1,687.08-2,539.73-1,517.55

Finding the Fourth Proportional to 1,687.08, 2,539.73 and 1,517.55

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Solution

The fourth proportional to 1,687.08, 2,539.73 and 1,517.55 is: 2,284.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,687.08 : 2,539.73 = 1,517.55 : x
  2. Step 2: Convert to fraction form
    1,687.08/2,539.73 = 1,517.55/x
  3. Step 3: Cross multiply
    1,687.08x = 2,539.73 × 1,517.55
  4. Step 4: Simplify right side
    1,687.08x = 3,854,167.26
  5. Step 5: Solve for x
    x = 3,854,167.26/1,687.08
  6. Step 6: Final answer
    x = 2,284.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.