Home / 3,918.68-5,877.20-1,838.13

Finding the Fourth Proportional to 3,918.68, 5,877.20 and 1,838.13

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Solution

The fourth proportional to 3,918.68, 5,877.20 and 1,838.13 is: 2,756.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,918.68 : 5,877.20 = 1,838.13 : x
  2. Step 2: Convert to fraction form
    3,918.68/5,877.20 = 1,838.13/x
  3. Step 3: Cross multiply
    3,918.68x = 5,877.20 × 1,838.13
  4. Step 4: Simplify right side
    3,918.68x = 10,803,048.45
  5. Step 5: Solve for x
    x = 10,803,048.45/3,918.68
  6. Step 6: Final answer
    x = 2,756.81

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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.