Home / 7,143.06-10,716.40-2,145.41

Finding the Fourth Proportional to 7,143.06, 10,716.40 and 2,145.41

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Solution

The fourth proportional to 7,143.06, 10,716.40 and 2,145.41 is: 3,218.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,143.06 : 10,716.40 = 2,145.41 : x
  2. Step 2: Convert to fraction form
    7,143.06/10,716.40 = 2,145.41/x
  3. Step 3: Cross multiply
    7,143.06x = 10,716.40 × 2,145.41
  4. Step 4: Simplify right side
    7,143.06x = 22,991,012.78
  5. Step 5: Solve for x
    x = 22,991,012.78/7,143.06
  6. Step 6: Final answer
    x = 3,218.65

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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.