Home / 3,520.31-5,278.86-1,327.48

Finding the Fourth Proportional to 3,520.31, 5,278.86 and 1,327.48

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Solution

The fourth proportional to 3,520.31, 5,278.86 and 1,327.48 is: 1,990.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,520.31 : 5,278.86 = 1,327.48 : x
  2. Step 2: Convert to fraction form
    3,520.31/5,278.86 = 1,327.48/x
  3. Step 3: Cross multiply
    3,520.31x = 5,278.86 × 1,327.48
  4. Step 4: Simplify right side
    3,520.31x = 7,007,567.88
  5. Step 5: Solve for x
    x = 7,007,567.88/3,520.31
  6. Step 6: Final answer
    x = 1,990.61

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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.