Home / 3,911.74-5,398.26-2,143.22

Finding the Fourth Proportional to 3,911.74, 5,398.26 and 2,143.22

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Solution

The fourth proportional to 3,911.74, 5,398.26 and 2,143.22 is: 2,957.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,911.74 : 5,398.26 = 2,143.22 : x
  2. Step 2: Convert to fraction form
    3,911.74/5,398.26 = 2,143.22/x
  3. Step 3: Cross multiply
    3,911.74x = 5,398.26 × 2,143.22
  4. Step 4: Simplify right side
    3,911.74x = 11,569,658.80
  5. Step 5: Solve for x
    x = 11,569,658.80/3,911.74
  6. Step 6: Final answer
    x = 2,957.68

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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.