Home / 3,910.47-5,397.21-2,317.47

Finding the Fourth Proportional to 3,910.47, 5,397.21 and 2,317.47

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Solution

The fourth proportional to 3,910.47, 5,397.21 and 2,317.47 is: 3,198.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,910.47 : 5,397.21 = 2,317.47 : x
  2. Step 2: Convert to fraction form
    3,910.47/5,397.21 = 2,317.47/x
  3. Step 3: Cross multiply
    3,910.47x = 5,397.21 × 2,317.47
  4. Step 4: Simplify right side
    3,910.47x = 12,507,872.26
  5. Step 5: Solve for x
    x = 12,507,872.26/3,910.47
  6. Step 6: Final answer
    x = 3,198.56

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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.