Home / 3,571.21-5,357.10-938.71

Finding the Fourth Proportional to 3,571.21, 5,357.10 and 938.71

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Solution

The fourth proportional to 3,571.21, 5,357.10 and 938.71 is: 1,408.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,571.21 : 5,357.10 = 938.71 : x
  2. Step 2: Convert to fraction form
    3,571.21/5,357.10 = 938.71/x
  3. Step 3: Cross multiply
    3,571.21x = 5,357.10 × 938.71
  4. Step 4: Simplify right side
    3,571.21x = 5,028,763.34
  5. Step 5: Solve for x
    x = 5,028,763.34/3,571.21
  6. Step 6: Final answer
    x = 1,408.14

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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.