Home / 3,451.30-4,762.78-1,879.40

Finding the Fourth Proportional to 3,451.30, 4,762.78 and 1,879.40

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Solution

The fourth proportional to 3,451.30, 4,762.78 and 1,879.40 is: 2,593.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,451.30 : 4,762.78 = 1,879.40 : x
  2. Step 2: Convert to fraction form
    3,451.30/4,762.78 = 1,879.40/x
  3. Step 3: Cross multiply
    3,451.30x = 4,762.78 × 1,879.40
  4. Step 4: Simplify right side
    3,451.30x = 8,951,168.73
  5. Step 5: Solve for x
    x = 8,951,168.73/3,451.30
  6. Step 6: Final answer
    x = 2,593.56

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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.