Home / 9,145.80-13,718.32-3,879.36

Finding the Fourth Proportional to 9,145.80, 13,718.32 and 3,879.36

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Solution

The fourth proportional to 9,145.80, 13,718.32 and 3,879.36 is: 5,818.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,145.80 : 13,718.32 = 3,879.36 : x
  2. Step 2: Convert to fraction form
    9,145.80/13,718.32 = 3,879.36/x
  3. Step 3: Cross multiply
    9,145.80x = 13,718.32 × 3,879.36
  4. Step 4: Simplify right side
    9,145.80x = 53,218,301.88
  5. Step 5: Solve for x
    x = 53,218,301.88/9,145.80
  6. Step 6: Final answer
    x = 5,818.88

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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.