Home / 2,168.28-3,253.73-869.63

Finding the Fourth Proportional to 2,168.28, 3,253.73 and 869.63

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Solution

The fourth proportional to 2,168.28, 3,253.73 and 869.63 is: 1,304.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,168.28 : 3,253.73 = 869.63 : x
  2. Step 2: Convert to fraction form
    2,168.28/3,253.73 = 869.63/x
  3. Step 3: Cross multiply
    2,168.28x = 3,253.73 × 869.63
  4. Step 4: Simplify right side
    2,168.28x = 2,829,520.60
  5. Step 5: Solve for x
    x = 2,829,520.60/2,168.28
  6. Step 6: Final answer
    x = 1,304.96

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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.