Home / 9,872.40-14,814.66-5,195.78

Finding the Fourth Proportional to 9,872.40, 14,814.66 and 5,195.78

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Solution

The fourth proportional to 9,872.40, 14,814.66 and 5,195.78 is: 7,796.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,872.40 : 14,814.66 = 5,195.78 : x
  2. Step 2: Convert to fraction form
    9,872.40/14,814.66 = 5,195.78/x
  3. Step 3: Cross multiply
    9,872.40x = 14,814.66 × 5,195.78
  4. Step 4: Simplify right side
    9,872.40x = 76,973,714.13
  5. Step 5: Solve for x
    x = 76,973,714.13/9,872.40
  6. Step 6: Final answer
    x = 7,796.86

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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.