Home / 2,215.86-3,320.66-1,229.11

Finding the Fourth Proportional to 2,215.86, 3,320.66 and 1,229.11

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Solution

The fourth proportional to 2,215.86, 3,320.66 and 1,229.11 is: 1,841.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,215.86 : 3,320.66 = 1,229.11 : x
  2. Step 2: Convert to fraction form
    2,215.86/3,320.66 = 1,229.11/x
  3. Step 3: Cross multiply
    2,215.86x = 3,320.66 × 1,229.11
  4. Step 4: Simplify right side
    2,215.86x = 4,081,453.34
  5. Step 5: Solve for x
    x = 4,081,453.34/2,215.86
  6. Step 6: Final answer
    x = 1,841.93

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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.