Home / 1,977.59-2,729.04-1,278.98

Finding the Fourth Proportional to 1,977.59, 2,729.04 and 1,278.98

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Solution

The fourth proportional to 1,977.59, 2,729.04 and 1,278.98 is: 1,764.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,977.59 : 2,729.04 = 1,278.98 : x
  2. Step 2: Convert to fraction form
    1,977.59/2,729.04 = 1,278.98/x
  3. Step 3: Cross multiply
    1,977.59x = 2,729.04 × 1,278.98
  4. Step 4: Simplify right side
    1,977.59x = 3,490,387.58
  5. Step 5: Solve for x
    x = 3,490,387.58/1,977.59
  6. Step 6: Final answer
    x = 1,764.97

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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.