Home / 2,235.43-3,354.82-831.15

Finding the Fourth Proportional to 2,235.43, 3,354.82 and 831.15

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Solution

The fourth proportional to 2,235.43, 3,354.82 and 831.15 is: 1,247.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,235.43 : 3,354.82 = 831.15 : x
  2. Step 2: Convert to fraction form
    2,235.43/3,354.82 = 831.15/x
  3. Step 3: Cross multiply
    2,235.43x = 3,354.82 × 831.15
  4. Step 4: Simplify right side
    2,235.43x = 2,788,356.57
  5. Step 5: Solve for x
    x = 2,788,356.57/2,235.43
  6. Step 6: Final answer
    x = 1,247.35

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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.