Home / 2,839.20-4,255.40-1,669.76

Finding the Fourth Proportional to 2,839.20, 4,255.40 and 1,669.76

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Solution

The fourth proportional to 2,839.20, 4,255.40 and 1,669.76 is: 2,502.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,839.20 : 4,255.40 = 1,669.76 : x
  2. Step 2: Convert to fraction form
    2,839.20/4,255.40 = 1,669.76/x
  3. Step 3: Cross multiply
    2,839.20x = 4,255.40 × 1,669.76
  4. Step 4: Simplify right side
    2,839.20x = 7,105,496.70
  5. Step 5: Solve for x
    x = 7,105,496.70/2,839.20
  6. Step 6: Final answer
    x = 2,502.64

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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.