Home / 3,720.78-5,576.28-2,078.10

Finding the Fourth Proportional to 3,720.78, 5,576.28 and 2,078.10

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Solution

The fourth proportional to 3,720.78, 5,576.28 and 2,078.10 is: 3,114.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,720.78 : 5,576.28 = 2,078.10 : x
  2. Step 2: Convert to fraction form
    3,720.78/5,576.28 = 2,078.10/x
  3. Step 3: Cross multiply
    3,720.78x = 5,576.28 × 2,078.10
  4. Step 4: Simplify right side
    3,720.78x = 11,588,067.47
  5. Step 5: Solve for x
    x = 11,588,067.47/3,720.78
  6. Step 6: Final answer
    x = 3,114.42

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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.