Home / 8,105.16-12,159.80-2,261.78

Finding the Fourth Proportional to 8,105.16, 12,159.80 and 2,261.78

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Solution

The fourth proportional to 8,105.16, 12,159.80 and 2,261.78 is: 3,393.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,105.16 : 12,159.80 = 2,261.78 : x
  2. Step 2: Convert to fraction form
    8,105.16/12,159.80 = 2,261.78/x
  3. Step 3: Cross multiply
    8,105.16x = 12,159.80 × 2,261.78
  4. Step 4: Simplify right side
    8,105.16x = 27,502,720.34
  5. Step 5: Solve for x
    x = 27,502,720.34/8,105.16
  6. Step 6: Final answer
    x = 3,393.24

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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.