Home / 3,427.80-5,142.12-1,236.72

Finding the Fourth Proportional to 3,427.80, 5,142.12 and 1,236.72

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Solution

The fourth proportional to 3,427.80, 5,142.12 and 1,236.72 is: 1,855.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,427.80 : 5,142.12 = 1,236.72 : x
  2. Step 2: Convert to fraction form
    3,427.80/5,142.12 = 1,236.72/x
  3. Step 3: Cross multiply
    3,427.80x = 5,142.12 × 1,236.72
  4. Step 4: Simplify right side
    3,427.80x = 6,359,362.65
  5. Step 5: Solve for x
    x = 6,359,362.65/3,427.80
  6. Step 6: Final answer
    x = 1,855.23

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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.