Home / 2,221.61-3,334.08-836.31

Finding the Fourth Proportional to 2,221.61, 3,334.08 and 836.31

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Solution

The fourth proportional to 2,221.61, 3,334.08 and 836.31 is: 1,255.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,221.61 : 3,334.08 = 836.31 : x
  2. Step 2: Convert to fraction form
    2,221.61/3,334.08 = 836.31/x
  3. Step 3: Cross multiply
    2,221.61x = 3,334.08 × 836.31
  4. Step 4: Simplify right side
    2,221.61x = 2,788,324.44
  5. Step 5: Solve for x
    x = 2,788,324.44/2,221.61
  6. Step 6: Final answer
    x = 1,255.09

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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.