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Finding the Fourth Proportional to 2,888.34, 3,984.02 and 1,992.12

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Solution

The fourth proportional to 2,888.34, 3,984.02 and 1,992.12 is: 2,747.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,888.34 : 3,984.02 = 1,992.12 : x
  2. Step 2: Convert to fraction form
    2,888.34/3,984.02 = 1,992.12/x
  3. Step 3: Cross multiply
    2,888.34x = 3,984.02 × 1,992.12
  4. Step 4: Simplify right side
    2,888.34x = 7,936,645.92
  5. Step 5: Solve for x
    x = 7,936,645.92/2,888.34
  6. Step 6: Final answer
    x = 2,747.82

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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.