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Finding the Fourth Proportional to 3,398.72, 4,693 and 2,769.34

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Solution

The fourth proportional to 3,398.72, 4,693 and 2,769.34 is: 3,823.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,398.72 : 4,693 = 2,769.34 : x
  2. Step 2: Convert to fraction form
    3,398.72/4,693 = 2,769.34/x
  3. Step 3: Cross multiply
    3,398.72x = 4,693 × 2,769.34
  4. Step 4: Simplify right side
    3,398.72x = 12,996,512.62
  5. Step 5: Solve for x
    x = 12,996,512.62/3,398.72
  6. Step 6: Final answer
    x = 3,823.94

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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.