Home / 5,148.21-7,726.10-3,981.09

Finding the Fourth Proportional to 5,148.21, 7,726.10 and 3,981.09

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Solution

The fourth proportional to 5,148.21, 7,726.10 and 3,981.09 is: 5,974.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,148.21 : 7,726.10 = 3,981.09 : x
  2. Step 2: Convert to fraction form
    5,148.21/7,726.10 = 3,981.09/x
  3. Step 3: Cross multiply
    5,148.21x = 7,726.10 × 3,981.09
  4. Step 4: Simplify right side
    5,148.21x = 30,758,279.54
  5. Step 5: Solve for x
    x = 30,758,279.54/5,148.21
  6. Step 6: Final answer
    x = 5,974.56

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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.