Home / 2,786.80-4,176.90-1,142.92

Finding the Fourth Proportional to 2,786.80, 4,176.90 and 1,142.92

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Solution

The fourth proportional to 2,786.80, 4,176.90 and 1,142.92 is: 1,713.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,786.80 : 4,176.90 = 1,142.92 : x
  2. Step 2: Convert to fraction form
    2,786.80/4,176.90 = 1,142.92/x
  3. Step 3: Cross multiply
    2,786.80x = 4,176.90 × 1,142.92
  4. Step 4: Simplify right side
    2,786.80x = 4,773,862.55
  5. Step 5: Solve for x
    x = 4,773,862.55/2,786.80
  6. Step 6: Final answer
    x = 1,713.03

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.