Home / 8,679.74-13,019.61-2,105.93

Finding the Fourth Proportional to 8,679.74, 13,019.61 and 2,105.93

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Solution

The fourth proportional to 8,679.74, 13,019.61 and 2,105.93 is: 3,158.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,679.74 : 13,019.61 = 2,105.93 : x
  2. Step 2: Convert to fraction form
    8,679.74/13,019.61 = 2,105.93/x
  3. Step 3: Cross multiply
    8,679.74x = 13,019.61 × 2,105.93
  4. Step 4: Simplify right side
    8,679.74x = 27,418,387.29
  5. Step 5: Solve for x
    x = 27,418,387.29/8,679.74
  6. Step 6: Final answer
    x = 3,158.90

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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.