Home / 3,480.29-5,220.20-1,631.81

Finding the Fourth Proportional to 3,480.29, 5,220.20 and 1,631.81

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Solution

The fourth proportional to 3,480.29, 5,220.20 and 1,631.81 is: 2,447.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,480.29 : 5,220.20 = 1,631.81 : x
  2. Step 2: Convert to fraction form
    3,480.29/5,220.20 = 1,631.81/x
  3. Step 3: Cross multiply
    3,480.29x = 5,220.20 × 1,631.81
  4. Step 4: Simplify right side
    3,480.29x = 8,518,340.30
  5. Step 5: Solve for x
    x = 8,518,340.30/3,480.29
  6. Step 6: Final answer
    x = 2,447.60

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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.