Home / 1,409.15-2,103.68-1,201.55

Finding the Fourth Proportional to 1,409.15, 2,103.68 and 1,201.55

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Solution

The fourth proportional to 1,409.15, 2,103.68 and 1,201.55 is: 1,793.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,409.15 : 2,103.68 = 1,201.55 : x
  2. Step 2: Convert to fraction form
    1,409.15/2,103.68 = 1,201.55/x
  3. Step 3: Cross multiply
    1,409.15x = 2,103.68 × 1,201.55
  4. Step 4: Simplify right side
    1,409.15x = 2,527,676.70
  5. Step 5: Solve for x
    x = 2,527,676.70/1,409.15
  6. Step 6: Final answer
    x = 1,793.76

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.