Home / 3,388.13-5,081.68-1,309.12

Finding the Fourth Proportional to 3,388.13, 5,081.68 and 1,309.12

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Solution

The fourth proportional to 3,388.13, 5,081.68 and 1,309.12 is: 1,963.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,388.13 : 5,081.68 = 1,309.12 : x
  2. Step 2: Convert to fraction form
    3,388.13/5,081.68 = 1,309.12/x
  3. Step 3: Cross multiply
    3,388.13x = 5,081.68 × 1,309.12
  4. Step 4: Simplify right side
    3,388.13x = 6,652,528.92
  5. Step 5: Solve for x
    x = 6,652,528.92/3,388.13
  6. Step 6: Final answer
    x = 1,963.48

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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.