Home / 3,399.78-4,691.34-1,907.58

Finding the Fourth Proportional to 3,399.78, 4,691.34 and 1,907.58

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Solution

The fourth proportional to 3,399.78, 4,691.34 and 1,907.58 is: 2,632.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,399.78 : 4,691.34 = 1,907.58 : x
  2. Step 2: Convert to fraction form
    3,399.78/4,691.34 = 1,907.58/x
  3. Step 3: Cross multiply
    3,399.78x = 4,691.34 × 1,907.58
  4. Step 4: Simplify right side
    3,399.78x = 8,949,106.36
  5. Step 5: Solve for x
    x = 8,949,106.36/3,399.78
  6. Step 6: Final answer
    x = 2,632.26

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.