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Finding the Fourth Proportional to 2,405.60, 3,604.15 and 1,671.74

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Solution

The fourth proportional to 2,405.60, 3,604.15 and 1,671.74 is: 2,504.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,405.60 : 3,604.15 = 1,671.74 : x
  2. Step 2: Convert to fraction form
    2,405.60/3,604.15 = 1,671.74/x
  3. Step 3: Cross multiply
    2,405.60x = 3,604.15 × 1,671.74
  4. Step 4: Simplify right side
    2,405.60x = 6,025,197.54
  5. Step 5: Solve for x
    x = 6,025,197.54/2,405.60
  6. Step 6: Final answer
    x = 2,504.65

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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.