Home / 3,685.92-5,529.66-1,220.61

Finding the Fourth Proportional to 3,685.92, 5,529.66 and 1,220.61

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Solution

The fourth proportional to 3,685.92, 5,529.66 and 1,220.61 is: 1,831.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,685.92 : 5,529.66 = 1,220.61 : x
  2. Step 2: Convert to fraction form
    3,685.92/5,529.66 = 1,220.61/x
  3. Step 3: Cross multiply
    3,685.92x = 5,529.66 × 1,220.61
  4. Step 4: Simplify right side
    3,685.92x = 6,749,558.29
  5. Step 5: Solve for x
    x = 6,749,558.29/3,685.92
  6. Step 6: Final answer
    x = 1,831.17

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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.