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Finding the Fourth Proportional to 2,998.62, 4,137.96 and 1,672.47

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Solution

The fourth proportional to 2,998.62, 4,137.96 and 1,672.47 is: 2,307.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,998.62 : 4,137.96 = 1,672.47 : x
  2. Step 2: Convert to fraction form
    2,998.62/4,137.96 = 1,672.47/x
  3. Step 3: Cross multiply
    2,998.62x = 4,137.96 × 1,672.47
  4. Step 4: Simplify right side
    2,998.62x = 6,920,613.96
  5. Step 5: Solve for x
    x = 6,920,613.96/2,998.62
  6. Step 6: Final answer
    x = 2,307.93

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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.