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Finding the Fourth Proportional to 2,269.48, 3,404.28 and 808.78

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Solution

The fourth proportional to 2,269.48, 3,404.28 and 808.78 is: 1,213.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,269.48 : 3,404.28 = 808.78 : x
  2. Step 2: Convert to fraction form
    2,269.48/3,404.28 = 808.78/x
  3. Step 3: Cross multiply
    2,269.48x = 3,404.28 × 808.78
  4. Step 4: Simplify right side
    2,269.48x = 2,753,313.58
  5. Step 5: Solve for x
    x = 2,753,313.58/2,269.48
  6. Step 6: Final answer
    x = 1,213.19

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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.