Home / 8,220.25-12,330.38-2,748.25

Finding the Fourth Proportional to 8,220.25, 12,330.38 and 2,748.25

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Solution

The fourth proportional to 8,220.25, 12,330.38 and 2,748.25 is: 4,122.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,220.25 : 12,330.38 = 2,748.25 : x
  2. Step 2: Convert to fraction form
    8,220.25/12,330.38 = 2,748.25/x
  3. Step 3: Cross multiply
    8,220.25x = 12,330.38 × 2,748.25
  4. Step 4: Simplify right side
    8,220.25x = 33,886,966.84
  5. Step 5: Solve for x
    x = 33,886,966.84/8,220.25
  6. Step 6: Final answer
    x = 4,122.38

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.