Home / 7,145.61-10,721.48-3,685.29

Finding the Fourth Proportional to 7,145.61, 10,721.48 and 3,685.29

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Solution

The fourth proportional to 7,145.61, 10,721.48 and 3,685.29 is: 5,529.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,145.61 : 10,721.48 = 3,685.29 : x
  2. Step 2: Convert to fraction form
    7,145.61/10,721.48 = 3,685.29/x
  3. Step 3: Cross multiply
    7,145.61x = 10,721.48 × 3,685.29
  4. Step 4: Simplify right side
    7,145.61x = 39,511,744.60
  5. Step 5: Solve for x
    x = 39,511,744.60/7,145.61
  6. Step 6: Final answer
    x = 5,529.51

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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.