Home / 3,215.11-4,822.35-2,181.75

Finding the Fourth Proportional to 3,215.11, 4,822.35 and 2,181.75

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Solution

The fourth proportional to 3,215.11, 4,822.35 and 2,181.75 is: 3,272.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,215.11 : 4,822.35 = 2,181.75 : x
  2. Step 2: Convert to fraction form
    3,215.11/4,822.35 = 2,181.75/x
  3. Step 3: Cross multiply
    3,215.11x = 4,822.35 × 2,181.75
  4. Step 4: Simplify right side
    3,215.11x = 10,521,151.20
  5. Step 5: Solve for x
    x = 10,521,151.20/3,215.11
  6. Step 6: Final answer
    x = 3,272.41

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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.