Home / 1,517.40-2,089.80-1,167.48

Finding the Fourth Proportional to 1,517.40, 2,089.80 and 1,167.48

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Solution

The fourth proportional to 1,517.40, 2,089.80 and 1,167.48 is: 1,607.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,517.40 : 2,089.80 = 1,167.48 : x
  2. Step 2: Convert to fraction form
    1,517.40/2,089.80 = 1,167.48/x
  3. Step 3: Cross multiply
    1,517.40x = 2,089.80 × 1,167.48
  4. Step 4: Simplify right side
    1,517.40x = 2,439,799.70
  5. Step 5: Solve for x
    x = 2,439,799.70/1,517.40
  6. Step 6: Final answer
    x = 1,607.88

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1.5x scale

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.