Home / 5,646.43-7,791.91-3,128.43

Finding the Fourth Proportional to 5,646.43, 7,791.91 and 3,128.43

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Solution

The fourth proportional to 5,646.43, 7,791.91 and 3,128.43 is: 4,317.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,646.43 : 7,791.91 = 3,128.43 : x
  2. Step 2: Convert to fraction form
    5,646.43/7,791.91 = 3,128.43/x
  3. Step 3: Cross multiply
    5,646.43x = 7,791.91 × 3,128.43
  4. Step 4: Simplify right side
    5,646.43x = 24,376,445.00
  5. Step 5: Solve for x
    x = 24,376,445.00/5,646.43
  6. Step 6: Final answer
    x = 4,317.14

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.