Home / 3,081.28-4,622.15-890.03

Finding the Fourth Proportional to 3,081.28, 4,622.15 and 890.03

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Solution

The fourth proportional to 3,081.28, 4,622.15 and 890.03 is: 1,335.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,081.28 : 4,622.15 = 890.03 : x
  2. Step 2: Convert to fraction form
    3,081.28/4,622.15 = 890.03/x
  3. Step 3: Cross multiply
    3,081.28x = 4,622.15 × 890.03
  4. Step 4: Simplify right side
    3,081.28x = 4,113,831.28
  5. Step 5: Solve for x
    x = 4,113,831.28/3,081.28
  6. Step 6: Final answer
    x = 1,335.11

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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.