Home / 8,078.19-12,118.68-2,530.47

Finding the Fourth Proportional to 8,078.19, 12,118.68 and 2,530.47

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Solution

The fourth proportional to 8,078.19, 12,118.68 and 2,530.47 is: 3,796.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,078.19 : 12,118.68 = 2,530.47 : x
  2. Step 2: Convert to fraction form
    8,078.19/12,118.68 = 2,530.47/x
  3. Step 3: Cross multiply
    8,078.19x = 12,118.68 × 2,530.47
  4. Step 4: Simplify right side
    8,078.19x = 30,665,956.18
  5. Step 5: Solve for x
    x = 30,665,956.18/8,078.19
  6. Step 6: Final answer
    x = 3,796.14

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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.