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Finding the Fourth Proportional to 4,138.98, 6,209.85 and 1,672.47

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Solution

The fourth proportional to 4,138.98, 6,209.85 and 1,672.47 is: 2,509.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,138.98 : 6,209.85 = 1,672.47 : x
  2. Step 2: Convert to fraction form
    4,138.98/6,209.85 = 1,672.47/x
  3. Step 3: Cross multiply
    4,138.98x = 6,209.85 × 1,672.47
  4. Step 4: Simplify right side
    4,138.98x = 10,385,787.83
  5. Step 5: Solve for x
    x = 10,385,787.83/4,138.98
  6. Step 6: Final answer
    x = 2,509.26

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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.