Home / 2,886.91-4,331.22-1,221.19

Finding the Fourth Proportional to 2,886.91, 4,331.22 and 1,221.19

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Solution

The fourth proportional to 2,886.91, 4,331.22 and 1,221.19 is: 1,832.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,886.91 : 4,331.22 = 1,221.19 : x
  2. Step 2: Convert to fraction form
    2,886.91/4,331.22 = 1,221.19/x
  3. Step 3: Cross multiply
    2,886.91x = 4,331.22 × 1,221.19
  4. Step 4: Simplify right side
    2,886.91x = 5,289,242.55
  5. Step 5: Solve for x
    x = 5,289,242.55/2,886.91
  6. Step 6: Final answer
    x = 1,832.15

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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.