Home / 6,408.78-8,842.68-3,719.58

Finding the Fourth Proportional to 6,408.78, 8,842.68 and 3,719.58

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Solution

The fourth proportional to 6,408.78, 8,842.68 and 3,719.58 is: 5,132.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,408.78 : 8,842.68 = 3,719.58 : x
  2. Step 2: Convert to fraction form
    6,408.78/8,842.68 = 3,719.58/x
  3. Step 3: Cross multiply
    6,408.78x = 8,842.68 × 3,719.58
  4. Step 4: Simplify right side
    6,408.78x = 32,891,022.51
  5. Step 5: Solve for x
    x = 32,891,022.51/6,408.78
  6. Step 6: Final answer
    x = 5,132.18

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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.