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Finding the Fourth Proportional to 3,342, 4,615.12 and 2,817.12

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Solution

The fourth proportional to 3,342, 4,615.12 and 2,817.12 is: 3,890.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,342 : 4,615.12 = 2,817.12 : x
  2. Step 2: Convert to fraction form
    3,342/4,615.12 = 2,817.12/x
  3. Step 3: Cross multiply
    3,342x = 4,615.12 × 2,817.12
  4. Step 4: Simplify right side
    3,342x = 13,001,346.85
  5. Step 5: Solve for x
    x = 13,001,346.85/3,342
  6. Step 6: Final answer
    x = 3,890.29

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Double scale
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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.