Home / 2,167.46-3,251.41-686.75

Finding the Fourth Proportional to 2,167.46, 3,251.41 and 686.75

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Solution

The fourth proportional to 2,167.46, 3,251.41 and 686.75 is: 1,030.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,167.46 : 3,251.41 = 686.75 : x
  2. Step 2: Convert to fraction form
    2,167.46/3,251.41 = 686.75/x
  3. Step 3: Cross multiply
    2,167.46x = 3,251.41 × 686.75
  4. Step 4: Simplify right side
    2,167.46x = 2,232,887.84
  5. Step 5: Solve for x
    x = 2,232,887.84/2,167.46
  6. Step 6: Final answer
    x = 1,030.19

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1.5x scale

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.