Home / 8,815.54-12,164.16-5,278

Finding the Fourth Proportional to 8,815.54, 12,164.16 and 5,278

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Solution

The fourth proportional to 8,815.54, 12,164.16 and 5,278 is: 7,282.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,815.54 : 12,164.16 = 5,278 : x
  2. Step 2: Convert to fraction form
    8,815.54/12,164.16 = 5,278/x
  3. Step 3: Cross multiply
    8,815.54x = 12,164.16 × 5,278
  4. Step 4: Simplify right side
    8,815.54x = 64,202,436.48
  5. Step 5: Solve for x
    x = 64,202,436.48/8,815.54
  6. Step 6: Final answer
    x = 7,282.87

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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.