Home / 3,585.77-5,378.81-1,120.61

Finding the Fourth Proportional to 3,585.77, 5,378.81 and 1,120.61

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Solution

The fourth proportional to 3,585.77, 5,378.81 and 1,120.61 is: 1,680.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,585.77 : 5,378.81 = 1,120.61 : x
  2. Step 2: Convert to fraction form
    3,585.77/5,378.81 = 1,120.61/x
  3. Step 3: Cross multiply
    3,585.77x = 5,378.81 × 1,120.61
  4. Step 4: Simplify right side
    3,585.77x = 6,027,540.99
  5. Step 5: Solve for x
    x = 6,027,540.99/3,585.77
  6. Step 6: Final answer
    x = 1,680.96

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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.