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Finding the Fourth Proportional to 2,400.60, 3,601.44 and 840.60

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Solution

The fourth proportional to 2,400.60, 3,601.44 and 840.60 is: 1,261.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,400.60 : 3,601.44 = 840.60 : x
  2. Step 2: Convert to fraction form
    2,400.60/3,601.44 = 840.60/x
  3. Step 3: Cross multiply
    2,400.60x = 3,601.44 × 840.60
  4. Step 4: Simplify right side
    2,400.60x = 3,027,370.46
  5. Step 5: Solve for x
    x = 3,027,370.46/2,400.60
  6. Step 6: Final answer
    x = 1,261.09

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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.