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Finding the Fourth Proportional to 3,260.90, 4,881.90 and 2,442.80

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Solution

The fourth proportional to 3,260.90, 4,881.90 and 2,442.80 is: 3,657.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,260.90 : 4,881.90 = 2,442.80 : x
  2. Step 2: Convert to fraction form
    3,260.90/4,881.90 = 2,442.80/x
  3. Step 3: Cross multiply
    3,260.90x = 4,881.90 × 2,442.80
  4. Step 4: Simplify right side
    3,260.90x = 11,925,505.32
  5. Step 5: Solve for x
    x = 11,925,505.32/3,260.90
  6. Step 6: Final answer
    x = 3,657.12

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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.