Home / 8,105.51-12,159.28-2,558.04

Finding the Fourth Proportional to 8,105.51, 12,159.28 and 2,558.04

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Solution

The fourth proportional to 8,105.51, 12,159.28 and 2,558.04 is: 3,837.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,105.51 : 12,159.28 = 2,558.04 : x
  2. Step 2: Convert to fraction form
    8,105.51/12,159.28 = 2,558.04/x
  3. Step 3: Cross multiply
    8,105.51x = 12,159.28 × 2,558.04
  4. Step 4: Simplify right side
    8,105.51x = 31,103,918.22
  5. Step 5: Solve for x
    x = 31,103,918.22/8,105.51
  6. Step 6: Final answer
    x = 3,837.38

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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.