Home / 3,895.20-5,838.66-1,812.78

Finding the Fourth Proportional to 3,895.20, 5,838.66 and 1,812.78

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Solution

The fourth proportional to 3,895.20, 5,838.66 and 1,812.78 is: 2,717.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,895.20 : 5,838.66 = 1,812.78 : x
  2. Step 2: Convert to fraction form
    3,895.20/5,838.66 = 1,812.78/x
  3. Step 3: Cross multiply
    3,895.20x = 5,838.66 × 1,812.78
  4. Step 4: Simplify right side
    3,895.20x = 10,584,206.07
  5. Step 5: Solve for x
    x = 10,584,206.07/3,895.20
  6. Step 6: Final answer
    x = 2,717.24

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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.