Home / 3,920.78-5,872.12-2,357.35

Finding the Fourth Proportional to 3,920.78, 5,872.12 and 2,357.35

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Solution

The fourth proportional to 3,920.78, 5,872.12 and 2,357.35 is: 3,530.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,920.78 : 5,872.12 = 2,357.35 : x
  2. Step 2: Convert to fraction form
    3,920.78/5,872.12 = 2,357.35/x
  3. Step 3: Cross multiply
    3,920.78x = 5,872.12 × 2,357.35
  4. Step 4: Simplify right side
    3,920.78x = 13,842,642.08
  5. Step 5: Solve for x
    x = 13,842,642.08/3,920.78
  6. Step 6: Final answer
    x = 3,530.58

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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.