Home / 8,121.52-12,185.64-2,927.92

Finding the Fourth Proportional to 8,121.52, 12,185.64 and 2,927.92

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Solution

The fourth proportional to 8,121.52, 12,185.64 and 2,927.92 is: 4,393.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,121.52 : 12,185.64 = 2,927.92 : x
  2. Step 2: Convert to fraction form
    8,121.52/12,185.64 = 2,927.92/x
  3. Step 3: Cross multiply
    8,121.52x = 12,185.64 × 2,927.92
  4. Step 4: Simplify right side
    8,121.52x = 35,678,579.07
  5. Step 5: Solve for x
    x = 35,678,579.07/8,121.52
  6. Step 6: Final answer
    x = 4,393.09

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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.