Home / 8,522.14-12,784.40-2,679.20

Finding the Fourth Proportional to 8,522.14, 12,784.40 and 2,679.20

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Solution

The fourth proportional to 8,522.14, 12,784.40 and 2,679.20 is: 4,019.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,522.14 : 12,784.40 = 2,679.20 : x
  2. Step 2: Convert to fraction form
    8,522.14/12,784.40 = 2,679.20/x
  3. Step 3: Cross multiply
    8,522.14x = 12,784.40 × 2,679.20
  4. Step 4: Simplify right side
    8,522.14x = 34,251,964.48
  5. Step 5: Solve for x
    x = 34,251,964.48/8,522.14
  6. Step 6: Final answer
    x = 4,019.17

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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.