Home / 2,831.52-4,245.92-1,187.63

Finding the Fourth Proportional to 2,831.52, 4,245.92 and 1,187.63

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Solution

The fourth proportional to 2,831.52, 4,245.92 and 1,187.63 is: 1,780.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,831.52 : 4,245.92 = 1,187.63 : x
  2. Step 2: Convert to fraction form
    2,831.52/4,245.92 = 1,187.63/x
  3. Step 3: Cross multiply
    2,831.52x = 4,245.92 × 1,187.63
  4. Step 4: Simplify right side
    2,831.52x = 5,042,581.97
  5. Step 5: Solve for x
    x = 5,042,581.97/2,831.52
  6. Step 6: Final answer
    x = 1,780.87

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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.