Home / 8,238.96-11,371.10-6,128.48

Finding the Fourth Proportional to 8,238.96, 11,371.10 and 6,128.48

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Solution

The fourth proportional to 8,238.96, 11,371.10 and 6,128.48 is: 8,458.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,238.96 : 11,371.10 = 6,128.48 : x
  2. Step 2: Convert to fraction form
    8,238.96/11,371.10 = 6,128.48/x
  3. Step 3: Cross multiply
    8,238.96x = 11,371.10 × 6,128.48
  4. Step 4: Simplify right side
    8,238.96x = 69,687,558.93
  5. Step 5: Solve for x
    x = 69,687,558.93/8,238.96
  6. Step 6: Final answer
    x = 8,458.30

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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.