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Finding the Fourth Proportional to 2,548.96, 3,823.38 and 817.60

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Solution

The fourth proportional to 2,548.96, 3,823.38 and 817.60 is: 1,226.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,548.96 : 3,823.38 = 817.60 : x
  2. Step 2: Convert to fraction form
    2,548.96/3,823.38 = 817.60/x
  3. Step 3: Cross multiply
    2,548.96x = 3,823.38 × 817.60
  4. Step 4: Simplify right side
    2,548.96x = 3,125,995.49
  5. Step 5: Solve for x
    x = 3,125,995.49/2,548.96
  6. Step 6: Final answer
    x = 1,226.38

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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.