Home / 8,919.68-12,309.24-5,144

Finding the Fourth Proportional to 8,919.68, 12,309.24 and 5,144

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Solution

The fourth proportional to 8,919.68, 12,309.24 and 5,144 is: 7,098.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,919.68 : 12,309.24 = 5,144 : x
  2. Step 2: Convert to fraction form
    8,919.68/12,309.24 = 5,144/x
  3. Step 3: Cross multiply
    8,919.68x = 12,309.24 × 5,144
  4. Step 4: Simplify right side
    8,919.68x = 63,318,730.56
  5. Step 5: Solve for x
    x = 63,318,730.56/8,919.68
  6. Step 6: Final answer
    x = 7,098.77

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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.