Home / 9,439.88-14,159.21-3,891.78

Finding the Fourth Proportional to 9,439.88, 14,159.21 and 3,891.78

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Solution

The fourth proportional to 9,439.88, 14,159.21 and 3,891.78 is: 5,837.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,439.88 : 14,159.21 = 3,891.78 : x
  2. Step 2: Convert to fraction form
    9,439.88/14,159.21 = 3,891.78/x
  3. Step 3: Cross multiply
    9,439.88x = 14,159.21 × 3,891.78
  4. Step 4: Simplify right side
    9,439.88x = 55,104,510.83
  5. Step 5: Solve for x
    x = 55,104,510.83/9,439.88
  6. Step 6: Final answer
    x = 5,837.42

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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.