Home / 2,178.12-3,266.24-791.13

Finding the Fourth Proportional to 2,178.12, 3,266.24 and 791.13

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Solution

The fourth proportional to 2,178.12, 3,266.24 and 791.13 is: 1,186.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,178.12 : 3,266.24 = 791.13 : x
  2. Step 2: Convert to fraction form
    2,178.12/3,266.24 = 791.13/x
  3. Step 3: Cross multiply
    2,178.12x = 3,266.24 × 791.13
  4. Step 4: Simplify right side
    2,178.12x = 2,584,016.50
  5. Step 5: Solve for x
    x = 2,584,016.50/2,178.12
  6. Step 6: Final answer
    x = 1,186.35

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1.5x scale

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.