Home / 5,370.26-7,411.14-3,131.78

Finding the Fourth Proportional to 5,370.26, 7,411.14 and 3,131.78

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Solution

The fourth proportional to 5,370.26, 7,411.14 and 3,131.78 is: 4,321.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,370.26 : 7,411.14 = 3,131.78 : x
  2. Step 2: Convert to fraction form
    5,370.26/7,411.14 = 3,131.78/x
  3. Step 3: Cross multiply
    5,370.26x = 7,411.14 × 3,131.78
  4. Step 4: Simplify right side
    5,370.26x = 23,210,022.97
  5. Step 5: Solve for x
    x = 23,210,022.97/5,370.26
  6. Step 6: Final answer
    x = 4,321.96

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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.