Home / 2,911.03-4,366.20-831.35

Finding the Fourth Proportional to 2,911.03, 4,366.20 and 831.35

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Solution

The fourth proportional to 2,911.03, 4,366.20 and 831.35 is: 1,246.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,911.03 : 4,366.20 = 831.35 : x
  2. Step 2: Convert to fraction form
    2,911.03/4,366.20 = 831.35/x
  3. Step 3: Cross multiply
    2,911.03x = 4,366.20 × 831.35
  4. Step 4: Simplify right side
    2,911.03x = 3,629,840.37
  5. Step 5: Solve for x
    x = 3,629,840.37/2,911.03
  6. Step 6: Final answer
    x = 1,246.93

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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.