Home / 3,479.18-5,215.26-2,181.56

Finding the Fourth Proportional to 3,479.18, 5,215.26 and 2,181.56

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Solution

The fourth proportional to 3,479.18, 5,215.26 and 2,181.56 is: 3,270.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,479.18 : 5,215.26 = 2,181.56 : x
  2. Step 2: Convert to fraction form
    3,479.18/5,215.26 = 2,181.56/x
  3. Step 3: Cross multiply
    3,479.18x = 5,215.26 × 2,181.56
  4. Step 4: Simplify right side
    3,479.18x = 11,377,402.61
  5. Step 5: Solve for x
    x = 11,377,402.61/3,479.18
  6. Step 6: Final answer
    x = 3,270.14

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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.