Home / 2,667.60-3,993.84-1,691.28

Finding the Fourth Proportional to 2,667.60, 3,993.84 and 1,691.28

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Solution

The fourth proportional to 2,667.60, 3,993.84 and 1,691.28 is: 2,532.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,667.60 : 3,993.84 = 1,691.28 : x
  2. Step 2: Convert to fraction form
    2,667.60/3,993.84 = 1,691.28/x
  3. Step 3: Cross multiply
    2,667.60x = 3,993.84 × 1,691.28
  4. Step 4: Simplify right side
    2,667.60x = 6,754,701.72
  5. Step 5: Solve for x
    x = 6,754,701.72/2,667.60
  6. Step 6: Final answer
    x = 2,532.13

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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.