Home / 8,064.25-12,091.68-3,128.13

Finding the Fourth Proportional to 8,064.25, 12,091.68 and 3,128.13

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Solution

The fourth proportional to 8,064.25, 12,091.68 and 3,128.13 is: 4,690.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,064.25 : 12,091.68 = 3,128.13 : x
  2. Step 2: Convert to fraction form
    8,064.25/12,091.68 = 3,128.13/x
  3. Step 3: Cross multiply
    8,064.25x = 12,091.68 × 3,128.13
  4. Step 4: Simplify right side
    8,064.25x = 37,824,346.96
  5. Step 5: Solve for x
    x = 37,824,346.96/8,064.25
  6. Step 6: Final answer
    x = 4,690.38

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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.