Home / 5,309.43-7,324.97-3,420.86

Finding the Fourth Proportional to 5,309.43, 7,324.97 and 3,420.86

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Solution

The fourth proportional to 5,309.43, 7,324.97 and 3,420.86 is: 4,719.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,309.43 : 7,324.97 = 3,420.86 : x
  2. Step 2: Convert to fraction form
    5,309.43/7,324.97 = 3,420.86/x
  3. Step 3: Cross multiply
    5,309.43x = 7,324.97 × 3,420.86
  4. Step 4: Simplify right side
    5,309.43x = 25,057,696.87
  5. Step 5: Solve for x
    x = 25,057,696.87/5,309.43
  6. Step 6: Final answer
    x = 4,719.47

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1.5x scale

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.