Home / 2,849.15-3,931.40-1,729.88

Finding the Fourth Proportional to 2,849.15, 3,931.40 and 1,729.88

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Solution

The fourth proportional to 2,849.15, 3,931.40 and 1,729.88 is: 2,386.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,849.15 : 3,931.40 = 1,729.88 : x
  2. Step 2: Convert to fraction form
    2,849.15/3,931.40 = 1,729.88/x
  3. Step 3: Cross multiply
    2,849.15x = 3,931.40 × 1,729.88
  4. Step 4: Simplify right side
    2,849.15x = 6,800,841.58
  5. Step 5: Solve for x
    x = 6,800,841.58/2,849.15
  6. Step 6: Final answer
    x = 2,386.97

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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.