Home / 5,145.06-7,721.24-3,685.44

Finding the Fourth Proportional to 5,145.06, 7,721.24 and 3,685.44

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Solution

The fourth proportional to 5,145.06, 7,721.24 and 3,685.44 is: 5,530.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,145.06 : 7,721.24 = 3,685.44 : x
  2. Step 2: Convert to fraction form
    5,145.06/7,721.24 = 3,685.44/x
  3. Step 3: Cross multiply
    5,145.06x = 7,721.24 × 3,685.44
  4. Step 4: Simplify right side
    5,145.06x = 28,456,148.32
  5. Step 5: Solve for x
    x = 28,456,148.32/5,145.06
  6. Step 6: Final answer
    x = 5,530.77

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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.