Home / 7,143.25-10,721.80-3,448.08

Finding the Fourth Proportional to 7,143.25, 10,721.80 and 3,448.08

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Solution

The fourth proportional to 7,143.25, 10,721.80 and 3,448.08 is: 5,175.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,143.25 : 10,721.80 = 3,448.08 : x
  2. Step 2: Convert to fraction form
    7,143.25/10,721.80 = 3,448.08/x
  3. Step 3: Cross multiply
    7,143.25x = 10,721.80 × 3,448.08
  4. Step 4: Simplify right side
    7,143.25x = 36,969,624.14
  5. Step 5: Solve for x
    x = 36,969,624.14/7,143.25
  6. Step 6: Final answer
    x = 5,175.46

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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.