Home / 3,629.80-5,439.84-1,778.08

Finding the Fourth Proportional to 3,629.80, 5,439.84 and 1,778.08

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Solution

The fourth proportional to 3,629.80, 5,439.84 and 1,778.08 is: 2,664.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,629.80 : 5,439.84 = 1,778.08 : x
  2. Step 2: Convert to fraction form
    3,629.80/5,439.84 = 1,778.08/x
  3. Step 3: Cross multiply
    3,629.80x = 5,439.84 × 1,778.08
  4. Step 4: Simplify right side
    3,629.80x = 9,672,470.71
  5. Step 5: Solve for x
    x = 9,672,470.71/3,629.80
  6. Step 6: Final answer
    x = 2,664.74

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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.