Home / 2,760.20-4,140.29-708.20

Finding the Fourth Proportional to 2,760.20, 4,140.29 and 708.20

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Solution

The fourth proportional to 2,760.20, 4,140.29 and 708.20 is: 1,062.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,760.20 : 4,140.29 = 708.20 : x
  2. Step 2: Convert to fraction form
    2,760.20/4,140.29 = 708.20/x
  3. Step 3: Cross multiply
    2,760.20x = 4,140.29 × 708.20
  4. Step 4: Simplify right side
    2,760.20x = 2,932,129.14
  5. Step 5: Solve for x
    x = 2,932,129.14/2,760.20
  6. Step 6: Final answer
    x = 1,062.29

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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.