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Finding the Fourth Proportional to 3,098.64, 4,648.88 and 1,638.82

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Solution

The fourth proportional to 3,098.64, 4,648.88 and 1,638.82 is: 2,458.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,098.64 : 4,648.88 = 1,638.82 : x
  2. Step 2: Convert to fraction form
    3,098.64/4,648.88 = 1,638.82/x
  3. Step 3: Cross multiply
    3,098.64x = 4,648.88 × 1,638.82
  4. Step 4: Simplify right side
    3,098.64x = 7,618,677.52
  5. Step 5: Solve for x
    x = 7,618,677.52/3,098.64
  6. Step 6: Final answer
    x = 2,458.72

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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.