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Finding the Fourth Proportional to 3,375.60, 5,058.60 and 2,491.20

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Solution

The fourth proportional to 3,375.60, 5,058.60 and 2,491.20 is: 3,733.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,375.60 : 5,058.60 = 2,491.20 : x
  2. Step 2: Convert to fraction form
    3,375.60/5,058.60 = 2,491.20/x
  3. Step 3: Cross multiply
    3,375.60x = 5,058.60 × 2,491.20
  4. Step 4: Simplify right side
    3,375.60x = 12,601,984.32
  5. Step 5: Solve for x
    x = 12,601,984.32/3,375.60
  6. Step 6: Final answer
    x = 3,733.26

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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.