Home / 8,099.89-11,178.75-5,115.58

Finding the Fourth Proportional to 8,099.89, 11,178.75 and 5,115.58

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Solution

The fourth proportional to 8,099.89, 11,178.75 and 5,115.58 is: 7,060.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,099.89 : 11,178.75 = 5,115.58 : x
  2. Step 2: Convert to fraction form
    8,099.89/11,178.75 = 5,115.58/x
  3. Step 3: Cross multiply
    8,099.89x = 11,178.75 × 5,115.58
  4. Step 4: Simplify right side
    8,099.89x = 57,185,789.93
  5. Step 5: Solve for x
    x = 57,185,789.93/8,099.89
  6. Step 6: Final answer
    x = 7,060.07

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1.5x scale

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.