Home / 2,293.30-3,438.60-831.80

Finding the Fourth Proportional to 2,293.30, 3,438.60 and 831.80

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Solution

The fourth proportional to 2,293.30, 3,438.60 and 831.80 is: 1,247.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,293.30 : 3,438.60 = 831.80 : x
  2. Step 2: Convert to fraction form
    2,293.30/3,438.60 = 831.80/x
  3. Step 3: Cross multiply
    2,293.30x = 3,438.60 × 831.80
  4. Step 4: Simplify right side
    2,293.30x = 2,860,227.48
  5. Step 5: Solve for x
    x = 2,860,227.48/2,293.30
  6. Step 6: Final answer
    x = 1,247.21

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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.