Home / 5,189.11-7,160.99-2,831.30

Finding the Fourth Proportional to 5,189.11, 7,160.99 and 2,831.30

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Solution

The fourth proportional to 5,189.11, 7,160.99 and 2,831.30 is: 3,907.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,189.11 : 7,160.99 = 2,831.30 : x
  2. Step 2: Convert to fraction form
    5,189.11/7,160.99 = 2,831.30/x
  3. Step 3: Cross multiply
    5,189.11x = 7,160.99 × 2,831.30
  4. Step 4: Simplify right side
    5,189.11x = 20,274,935.97
  5. Step 5: Solve for x
    x = 20,274,935.97/5,189.11
  6. Step 6: Final answer
    x = 3,907.21

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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.