Home / 2,119.38-3,181.14-1,147.56

Finding the Fourth Proportional to 2,119.38, 3,181.14 and 1,147.56

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Solution

The fourth proportional to 2,119.38, 3,181.14 and 1,147.56 is: 1,722.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,119.38 : 3,181.14 = 1,147.56 : x
  2. Step 2: Convert to fraction form
    2,119.38/3,181.14 = 1,147.56/x
  3. Step 3: Cross multiply
    2,119.38x = 3,181.14 × 1,147.56
  4. Step 4: Simplify right side
    2,119.38x = 3,650,549.02
  5. Step 5: Solve for x
    x = 3,650,549.02/2,119.38
  6. Step 6: Final answer
    x = 1,722.46

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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.