Home / 2,132.21-3,197.78-1,438.49

Finding the Fourth Proportional to 2,132.21, 3,197.78 and 1,438.49

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Solution

The fourth proportional to 2,132.21, 3,197.78 and 1,438.49 is: 2,157.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,132.21 : 3,197.78 = 1,438.49 : x
  2. Step 2: Convert to fraction form
    2,132.21/3,197.78 = 1,438.49/x
  3. Step 3: Cross multiply
    2,132.21x = 3,197.78 × 1,438.49
  4. Step 4: Simplify right side
    2,132.21x = 4,599,967.36
  5. Step 5: Solve for x
    x = 4,599,967.36/2,132.21
  6. Step 6: Final answer
    x = 2,157.37

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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.