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Finding the Fourth Proportional to 2,882.22, 3,975.21 and 2,220.90

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Solution

The fourth proportional to 2,882.22, 3,975.21 and 2,220.90 is: 3,063.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,882.22 : 3,975.21 = 2,220.90 : x
  2. Step 2: Convert to fraction form
    2,882.22/3,975.21 = 2,220.90/x
  3. Step 3: Cross multiply
    2,882.22x = 3,975.21 × 2,220.90
  4. Step 4: Simplify right side
    2,882.22x = 8,828,543.89
  5. Step 5: Solve for x
    x = 8,828,543.89/2,882.22
  6. Step 6: Final answer
    x = 3,063.11

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Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.