Home / 4,138.50-6,208.92-1,672.78

Finding the Fourth Proportional to 4,138.50, 6,208.92 and 1,672.78

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Solution

The fourth proportional to 4,138.50, 6,208.92 and 1,672.78 is: 2,509.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,138.50 : 6,208.92 = 1,672.78 : x
  2. Step 2: Convert to fraction form
    4,138.50/6,208.92 = 1,672.78/x
  3. Step 3: Cross multiply
    4,138.50x = 6,208.92 × 1,672.78
  4. Step 4: Simplify right side
    4,138.50x = 10,386,157.20
  5. Step 5: Solve for x
    x = 10,386,157.20/4,138.50
  6. Step 6: Final answer
    x = 2,509.64

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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.