Home / 8,679.29-13,018.93-2,105.47

Finding the Fourth Proportional to 8,679.29, 13,018.93 and 2,105.47

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Solution

The fourth proportional to 8,679.29, 13,018.93 and 2,105.47 is: 3,158.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,679.29 : 13,018.93 = 2,105.47 : x
  2. Step 2: Convert to fraction form
    8,679.29/13,018.93 = 2,105.47/x
  3. Step 3: Cross multiply
    8,679.29x = 13,018.93 × 2,105.47
  4. Step 4: Simplify right side
    8,679.29x = 27,410,966.55
  5. Step 5: Solve for x
    x = 27,410,966.55/8,679.29
  6. Step 6: Final answer
    x = 3,158.20

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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.