Home / 3,429.91-5,143.80-1,238.36

Finding the Fourth Proportional to 3,429.91, 5,143.80 and 1,238.36

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Solution

The fourth proportional to 3,429.91, 5,143.80 and 1,238.36 is: 1,857.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,429.91 : 5,143.80 = 1,238.36 : x
  2. Step 2: Convert to fraction form
    3,429.91/5,143.80 = 1,238.36/x
  3. Step 3: Cross multiply
    3,429.91x = 5,143.80 × 1,238.36
  4. Step 4: Simplify right side
    3,429.91x = 6,369,876.17
  5. Step 5: Solve for x
    x = 6,369,876.17/3,429.91
  6. Step 6: Final answer
    x = 1,857.16

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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.