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Finding the Fourth Proportional to 3,821.70, 5,732.55 and 3,797.40

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Solution

The fourth proportional to 3,821.70, 5,732.55 and 3,797.40 is: 5,696.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,821.70 : 5,732.55 = 3,797.40 : x
  2. Step 2: Convert to fraction form
    3,821.70/5,732.55 = 3,797.40/x
  3. Step 3: Cross multiply
    3,821.70x = 5,732.55 × 3,797.40
  4. Step 4: Simplify right side
    3,821.70x = 21,768,785.37
  5. Step 5: Solve for x
    x = 21,768,785.37/3,821.70
  6. Step 6: Final answer
    x = 5,696.10

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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.