Home / 1,902.28-2,853.41-669.55

Finding the Fourth Proportional to 1,902.28, 2,853.41 and 669.55

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Solution

The fourth proportional to 1,902.28, 2,853.41 and 669.55 is: 1,004.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,902.28 : 2,853.41 = 669.55 : x
  2. Step 2: Convert to fraction form
    1,902.28/2,853.41 = 669.55/x
  3. Step 3: Cross multiply
    1,902.28x = 2,853.41 × 669.55
  4. Step 4: Simplify right side
    1,902.28x = 1,910,491.86
  5. Step 5: Solve for x
    x = 1,910,491.86/1,902.28
  6. Step 6: Final answer
    x = 1,004.32

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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.