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Finding the Fourth Proportional to 3,698.75, 5,549.75 and 2,720.27

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Solution

The fourth proportional to 3,698.75, 5,549.75 and 2,720.27 is: 4,081.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,698.75 : 5,549.75 = 2,720.27 : x
  2. Step 2: Convert to fraction form
    3,698.75/5,549.75 = 2,720.27/x
  3. Step 3: Cross multiply
    3,698.75x = 5,549.75 × 2,720.27
  4. Step 4: Simplify right side
    3,698.75x = 15,096,818.43
  5. Step 5: Solve for x
    x = 15,096,818.43/3,698.75
  6. Step 6: Final answer
    x = 4,081.60

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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.