Home / 1,977.54-2,729.33-1,191.70

Finding the Fourth Proportional to 1,977.54, 2,729.33 and 1,191.70

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Solution

The fourth proportional to 1,977.54, 2,729.33 and 1,191.70 is: 1,644.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,977.54 : 2,729.33 = 1,191.70 : x
  2. Step 2: Convert to fraction form
    1,977.54/2,729.33 = 1,191.70/x
  3. Step 3: Cross multiply
    1,977.54x = 2,729.33 × 1,191.70
  4. Step 4: Simplify right side
    1,977.54x = 3,252,542.56
  5. Step 5: Solve for x
    x = 3,252,542.56/1,977.54
  6. Step 6: Final answer
    x = 1,644.74

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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.