Home / 7,142.43-10,716.68-3,851.68

Finding the Fourth Proportional to 7,142.43, 10,716.68 and 3,851.68

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Solution

The fourth proportional to 7,142.43, 10,716.68 and 3,851.68 is: 5,779.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,142.43 : 10,716.68 = 3,851.68 : x
  2. Step 2: Convert to fraction form
    7,142.43/10,716.68 = 3,851.68/x
  3. Step 3: Cross multiply
    7,142.43x = 10,716.68 × 3,851.68
  4. Step 4: Simplify right side
    7,142.43x = 41,277,222.02
  5. Step 5: Solve for x
    x = 41,277,222.02/7,142.43
  6. Step 6: Final answer
    x = 5,779.16

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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.