Home / 2,911.24-4,366.56-831.12

Finding the Fourth Proportional to 2,911.24, 4,366.56 and 831.12

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Solution

The fourth proportional to 2,911.24, 4,366.56 and 831.12 is: 1,246.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,911.24 : 4,366.56 = 831.12 : x
  2. Step 2: Convert to fraction form
    2,911.24/4,366.56 = 831.12/x
  3. Step 3: Cross multiply
    2,911.24x = 4,366.56 × 831.12
  4. Step 4: Simplify right side
    2,911.24x = 3,629,135.35
  5. Step 5: Solve for x
    x = 3,629,135.35/2,911.24
  6. Step 6: Final answer
    x = 1,246.59

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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.