Home / 3,585.75-5,378.61-1,120.81

Finding the Fourth Proportional to 3,585.75, 5,378.61 and 1,120.81

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Solution

The fourth proportional to 3,585.75, 5,378.61 and 1,120.81 is: 1,681.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,585.75 : 5,378.61 = 1,120.81 : x
  2. Step 2: Convert to fraction form
    3,585.75/5,378.61 = 1,120.81/x
  3. Step 3: Cross multiply
    3,585.75x = 5,378.61 × 1,120.81
  4. Step 4: Simplify right side
    3,585.75x = 6,028,399.87
  5. Step 5: Solve for x
    x = 6,028,399.87/3,585.75
  6. Step 6: Final answer
    x = 1,681.21

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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.