Home / 3,869.68-5,812.44-2,555.36

Finding the Fourth Proportional to 3,869.68, 5,812.44 and 2,555.36

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Solution

The fourth proportional to 3,869.68, 5,812.44 and 2,555.36 is: 3,838.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,869.68 : 5,812.44 = 2,555.36 : x
  2. Step 2: Convert to fraction form
    3,869.68/5,812.44 = 2,555.36/x
  3. Step 3: Cross multiply
    3,869.68x = 5,812.44 × 2,555.36
  4. Step 4: Simplify right side
    3,869.68x = 14,852,876.68
  5. Step 5: Solve for x
    x = 14,852,876.68/3,869.68
  6. Step 6: Final answer
    x = 3,838.27

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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.