Home / 5,661.15-7,812.41-3,143.31

Finding the Fourth Proportional to 5,661.15, 7,812.41 and 3,143.31

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Solution

The fourth proportional to 5,661.15, 7,812.41 and 3,143.31 is: 4,337.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,661.15 : 7,812.41 = 3,143.31 : x
  2. Step 2: Convert to fraction form
    5,661.15/7,812.41 = 3,143.31/x
  3. Step 3: Cross multiply
    5,661.15x = 7,812.41 × 3,143.31
  4. Step 4: Simplify right side
    5,661.15x = 24,556,834.34
  5. Step 5: Solve for x
    x = 24,556,834.34/5,661.15
  6. Step 6: Final answer
    x = 4,337.78

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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.