Home / 2,999.20-4,138.92-1,672.99

Finding the Fourth Proportional to 2,999.20, 4,138.92 and 1,672.99

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Solution

The fourth proportional to 2,999.20, 4,138.92 and 1,672.99 is: 2,308.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,999.20 : 4,138.92 = 1,672.99 : x
  2. Step 2: Convert to fraction form
    2,999.20/4,138.92 = 1,672.99/x
  3. Step 3: Cross multiply
    2,999.20x = 4,138.92 × 1,672.99
  4. Step 4: Simplify right side
    2,999.20x = 6,924,371.77
  5. Step 5: Solve for x
    x = 6,924,371.77/2,999.20
  6. Step 6: Final answer
    x = 2,308.74

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.