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Finding the Fourth Proportional to 2,549.72, 3,824.70 and 818.36

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Solution

The fourth proportional to 2,549.72, 3,824.70 and 818.36 is: 1,227.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,549.72 : 3,824.70 = 818.36 : x
  2. Step 2: Convert to fraction form
    2,549.72/3,824.70 = 818.36/x
  3. Step 3: Cross multiply
    2,549.72x = 3,824.70 × 818.36
  4. Step 4: Simplify right side
    2,549.72x = 3,129,981.49
  5. Step 5: Solve for x
    x = 3,129,981.49/2,549.72
  6. Step 6: Final answer
    x = 1,227.58

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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.