Home / 5,631.39-8,448.56-2,121.44

Finding the Fourth Proportional to 5,631.39, 8,448.56 and 2,121.44

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Solution

The fourth proportional to 5,631.39, 8,448.56 and 2,121.44 is: 3,182.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,631.39 : 8,448.56 = 2,121.44 : x
  2. Step 2: Convert to fraction form
    5,631.39/8,448.56 = 2,121.44/x
  3. Step 3: Cross multiply
    5,631.39x = 8,448.56 × 2,121.44
  4. Step 4: Simplify right side
    5,631.39x = 17,923,060.28
  5. Step 5: Solve for x
    x = 17,923,060.28/5,631.39
  6. Step 6: Final answer
    x = 3,182.71

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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.