Home / 2,747.30-4,122.30-1,286.20

Finding the Fourth Proportional to 2,747.30, 4,122.30 and 1,286.20

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Solution

The fourth proportional to 2,747.30, 4,122.30 and 1,286.20 is: 1,929.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,747.30 : 4,122.30 = 1,286.20 : x
  2. Step 2: Convert to fraction form
    2,747.30/4,122.30 = 1,286.20/x
  3. Step 3: Cross multiply
    2,747.30x = 4,122.30 × 1,286.20
  4. Step 4: Simplify right side
    2,747.30x = 5,302,102.26
  5. Step 5: Solve for x
    x = 5,302,102.26/2,747.30
  6. Step 6: Final answer
    x = 1,929.93

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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.