Home / 3,719.19-5,132.12-2,147.79

Finding the Fourth Proportional to 3,719.19, 5,132.12 and 2,147.79

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Solution

The fourth proportional to 3,719.19, 5,132.12 and 2,147.79 is: 2,963.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,719.19 : 5,132.12 = 2,147.79 : x
  2. Step 2: Convert to fraction form
    3,719.19/5,132.12 = 2,147.79/x
  3. Step 3: Cross multiply
    3,719.19x = 5,132.12 × 2,147.79
  4. Step 4: Simplify right side
    3,719.19x = 11,022,705.28
  5. Step 5: Solve for x
    x = 11,022,705.28/3,719.19
  6. Step 6: Final answer
    x = 2,963.74

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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.