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Finding the Fourth Proportional to 2,406.60, 3,321 and 1,358.64

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Solution

The fourth proportional to 2,406.60, 3,321 and 1,358.64 is: 1,874.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,406.60 : 3,321 = 1,358.64 : x
  2. Step 2: Convert to fraction form
    2,406.60/3,321 = 1,358.64/x
  3. Step 3: Cross multiply
    2,406.60x = 3,321 × 1,358.64
  4. Step 4: Simplify right side
    2,406.60x = 4,512,043.44
  5. Step 5: Solve for x
    x = 4,512,043.44/2,406.60
  6. Step 6: Final answer
    x = 1,874.86

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.