Home / 2,911.15-4,366.94-831.33

Finding the Fourth Proportional to 2,911.15, 4,366.94 and 831.33

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Solution

The fourth proportional to 2,911.15, 4,366.94 and 831.33 is: 1,247.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,911.15 : 4,366.94 = 831.33 : x
  2. Step 2: Convert to fraction form
    2,911.15/4,366.94 = 831.33/x
  3. Step 3: Cross multiply
    2,911.15x = 4,366.94 × 831.33
  4. Step 4: Simplify right side
    2,911.15x = 3,630,368.23
  5. Step 5: Solve for x
    x = 3,630,368.23/2,911.15
  6. Step 6: Final answer
    x = 1,247.06

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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.