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Finding the Fourth Proportional to 3,257.90, 4,890.45 and 3,046.40

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Solution

The fourth proportional to 3,257.90, 4,890.45 and 3,046.40 is: 4,572.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,257.90 : 4,890.45 = 3,046.40 : x
  2. Step 2: Convert to fraction form
    3,257.90/4,890.45 = 3,046.40/x
  3. Step 3: Cross multiply
    3,257.90x = 4,890.45 × 3,046.40
  4. Step 4: Simplify right side
    3,257.90x = 14,898,266.88
  5. Step 5: Solve for x
    x = 14,898,266.88/3,257.90
  6. Step 6: Final answer
    x = 4,572.97

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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.