Home / 3,389.16-5,081.92-1,309.70

Finding the Fourth Proportional to 3,389.16, 5,081.92 and 1,309.70

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Solution

The fourth proportional to 3,389.16, 5,081.92 and 1,309.70 is: 1,963.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,389.16 : 5,081.92 = 1,309.70 : x
  2. Step 2: Convert to fraction form
    3,389.16/5,081.92 = 1,309.70/x
  3. Step 3: Cross multiply
    3,389.16x = 5,081.92 × 1,309.70
  4. Step 4: Simplify right side
    3,389.16x = 6,655,790.62
  5. Step 5: Solve for x
    x = 6,655,790.62/3,389.16
  6. Step 6: Final answer
    x = 1,963.85

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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.