Home / 8,123.91-11,212.86-5,137.44

Finding the Fourth Proportional to 8,123.91, 11,212.86 and 5,137.44

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Solution

The fourth proportional to 8,123.91, 11,212.86 and 5,137.44 is: 7,090.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,123.91 : 11,212.86 = 5,137.44 : x
  2. Step 2: Convert to fraction form
    8,123.91/11,212.86 = 5,137.44/x
  3. Step 3: Cross multiply
    8,123.91x = 11,212.86 × 5,137.44
  4. Step 4: Simplify right side
    8,123.91x = 57,605,395.48
  5. Step 5: Solve for x
    x = 57,605,395.48/8,123.91
  6. Step 6: Final answer
    x = 7,090.85

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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.