Home / 1,539.27-2,309.85-717.12

Finding the Fourth Proportional to 1,539.27, 2,309.85 and 717.12

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Solution

The fourth proportional to 1,539.27, 2,309.85 and 717.12 is: 1,076.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,539.27 : 2,309.85 = 717.12 : x
  2. Step 2: Convert to fraction form
    1,539.27/2,309.85 = 717.12/x
  3. Step 3: Cross multiply
    1,539.27x = 2,309.85 × 717.12
  4. Step 4: Simplify right side
    1,539.27x = 1,656,439.63
  5. Step 5: Solve for x
    x = 1,656,439.63/1,539.27
  6. Step 6: Final answer
    x = 1,076.12

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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.