Home / 3,579.78-5,370.20-1,240.36

Finding the Fourth Proportional to 3,579.78, 5,370.20 and 1,240.36

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Solution

The fourth proportional to 3,579.78, 5,370.20 and 1,240.36 is: 1,860.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,579.78 : 5,370.20 = 1,240.36 : x
  2. Step 2: Convert to fraction form
    3,579.78/5,370.20 = 1,240.36/x
  3. Step 3: Cross multiply
    3,579.78x = 5,370.20 × 1,240.36
  4. Step 4: Simplify right side
    3,579.78x = 6,660,981.27
  5. Step 5: Solve for x
    x = 6,660,981.27/3,579.78
  6. Step 6: Final answer
    x = 1,860.72

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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.