Home / 2,321.60-3,204.11-1,378.22

Finding the Fourth Proportional to 2,321.60, 3,204.11 and 1,378.22

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Solution

The fourth proportional to 2,321.60, 3,204.11 and 1,378.22 is: 1,902.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,321.60 : 3,204.11 = 1,378.22 : x
  2. Step 2: Convert to fraction form
    2,321.60/3,204.11 = 1,378.22/x
  3. Step 3: Cross multiply
    2,321.60x = 3,204.11 × 1,378.22
  4. Step 4: Simplify right side
    2,321.60x = 4,415,945.57
  5. Step 5: Solve for x
    x = 4,415,945.57/2,321.60
  6. Step 6: Final answer
    x = 1,902.12

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1.5x scale

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.