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Finding the Fourth Proportional to 7,143.52, 10,722.19 and 3,448.35

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Solution

The fourth proportional to 7,143.52, 10,722.19 and 3,448.35 is: 5,175.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,143.52 : 10,722.19 = 3,448.35 : x
  2. Step 2: Convert to fraction form
    7,143.52/10,722.19 = 3,448.35/x
  3. Step 3: Cross multiply
    7,143.52x = 10,722.19 × 3,448.35
  4. Step 4: Simplify right side
    7,143.52x = 36,973,863.89
  5. Step 5: Solve for x
    x = 36,973,863.89/7,143.52
  6. Step 6: Final answer
    x = 5,175.86

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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.