Home / 3,786.78-5,680.14-1,154.28

Finding the Fourth Proportional to 3,786.78, 5,680.14 and 1,154.28

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Solution

The fourth proportional to 3,786.78, 5,680.14 and 1,154.28 is: 1,731.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,786.78 : 5,680.14 = 1,154.28 : x
  2. Step 2: Convert to fraction form
    3,786.78/5,680.14 = 1,154.28/x
  3. Step 3: Cross multiply
    3,786.78x = 5,680.14 × 1,154.28
  4. Step 4: Simplify right side
    3,786.78x = 6,556,472.00
  5. Step 5: Solve for x
    x = 6,556,472.00/3,786.78
  6. Step 6: Final answer
    x = 1,731.41

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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.