Home / 5,189.52-7,161.58-2,831.70

Finding the Fourth Proportional to 5,189.52, 7,161.58 and 2,831.70

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Solution

The fourth proportional to 5,189.52, 7,161.58 and 2,831.70 is: 3,907.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,189.52 : 7,161.58 = 2,831.70 : x
  2. Step 2: Convert to fraction form
    5,189.52/7,161.58 = 2,831.70/x
  3. Step 3: Cross multiply
    5,189.52x = 7,161.58 × 2,831.70
  4. Step 4: Simplify right side
    5,189.52x = 20,279,446.09
  5. Step 5: Solve for x
    x = 20,279,446.09/5,189.52
  6. Step 6: Final answer
    x = 3,907.77

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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.