Home / 3,389.52-5,081.18-1,308.20

Finding the Fourth Proportional to 3,389.52, 5,081.18 and 1,308.20

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Solution

The fourth proportional to 3,389.52, 5,081.18 and 1,308.20 is: 1,961.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,389.52 : 5,081.18 = 1,308.20 : x
  2. Step 2: Convert to fraction form
    3,389.52/5,081.18 = 1,308.20/x
  3. Step 3: Cross multiply
    3,389.52x = 5,081.18 × 1,308.20
  4. Step 4: Simplify right side
    3,389.52x = 6,647,199.68
  5. Step 5: Solve for x
    x = 6,647,199.68/3,389.52
  6. Step 6: Final answer
    x = 1,961.10

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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.