Home / 3,586.87-5,380.27-1,121.71

Finding the Fourth Proportional to 3,586.87, 5,380.27 and 1,121.71

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Solution

The fourth proportional to 3,586.87, 5,380.27 and 1,121.71 is: 1,682.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,586.87 : 5,380.27 = 1,121.71 : x
  2. Step 2: Convert to fraction form
    3,586.87/5,380.27 = 1,121.71/x
  3. Step 3: Cross multiply
    3,586.87x = 5,380.27 × 1,121.71
  4. Step 4: Simplify right side
    3,586.87x = 6,035,102.66
  5. Step 5: Solve for x
    x = 6,035,102.66/3,586.87
  6. Step 6: Final answer
    x = 1,682.55

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1.5x scale

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.