Home / 5,388.84-8,081.68-2,101.20

Finding the Fourth Proportional to 5,388.84, 8,081.68 and 2,101.20

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Solution

The fourth proportional to 5,388.84, 8,081.68 and 2,101.20 is: 3,151.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,388.84 : 8,081.68 = 2,101.20 : x
  2. Step 2: Convert to fraction form
    5,388.84/8,081.68 = 2,101.20/x
  3. Step 3: Cross multiply
    5,388.84x = 8,081.68 × 2,101.20
  4. Step 4: Simplify right side
    5,388.84x = 16,981,226.02
  5. Step 5: Solve for x
    x = 16,981,226.02/5,388.84
  6. Step 6: Final answer
    x = 3,151.18

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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.