Home / 2,353.30-3,247.41-1,290.85

Finding the Fourth Proportional to 2,353.30, 3,247.41 and 1,290.85

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Solution

The fourth proportional to 2,353.30, 3,247.41 and 1,290.85 is: 1,781.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,353.30 : 3,247.41 = 1,290.85 : x
  2. Step 2: Convert to fraction form
    2,353.30/3,247.41 = 1,290.85/x
  3. Step 3: Cross multiply
    2,353.30x = 3,247.41 × 1,290.85
  4. Step 4: Simplify right side
    2,353.30x = 4,191,919.20
  5. Step 5: Solve for x
    x = 4,191,919.20/2,353.30
  6. Step 6: Final answer
    x = 1,781.29

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1.5x scale

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.