Home / 2,220.86-3,331.11-868.58

Finding the Fourth Proportional to 2,220.86, 3,331.11 and 868.58

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Solution

The fourth proportional to 2,220.86, 3,331.11 and 868.58 is: 1,302.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,220.86 : 3,331.11 = 868.58 : x
  2. Step 2: Convert to fraction form
    2,220.86/3,331.11 = 868.58/x
  3. Step 3: Cross multiply
    2,220.86x = 3,331.11 × 868.58
  4. Step 4: Simplify right side
    2,220.86x = 2,893,335.52
  5. Step 5: Solve for x
    x = 2,893,335.52/2,220.86
  6. Step 6: Final answer
    x = 1,302.80

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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.