Home / 3,719.42-5,132.22-2,147.21

Finding the Fourth Proportional to 3,719.42, 5,132.22 and 2,147.21

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Solution

The fourth proportional to 3,719.42, 5,132.22 and 2,147.21 is: 2,962.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,719.42 : 5,132.22 = 2,147.21 : x
  2. Step 2: Convert to fraction form
    3,719.42/5,132.22 = 2,147.21/x
  3. Step 3: Cross multiply
    3,719.42x = 5,132.22 × 2,147.21
  4. Step 4: Simplify right side
    3,719.42x = 11,019,954.11
  5. Step 5: Solve for x
    x = 11,019,954.11/3,719.42
  6. Step 6: Final answer
    x = 2,962.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.