Home / 3,107.62-4,288.38-1,781.24

Finding the Fourth Proportional to 3,107.62, 4,288.38 and 1,781.24

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Solution

The fourth proportional to 3,107.62, 4,288.38 and 1,781.24 is: 2,458.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,107.62 : 4,288.38 = 1,781.24 : x
  2. Step 2: Convert to fraction form
    3,107.62/4,288.38 = 1,781.24/x
  3. Step 3: Cross multiply
    3,107.62x = 4,288.38 × 1,781.24
  4. Step 4: Simplify right side
    3,107.62x = 7,638,633.99
  5. Step 5: Solve for x
    x = 7,638,633.99/3,107.62
  6. Step 6: Final answer
    x = 2,458.04

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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.