Home / 3,721.14-5,135.40-2,149.34

Finding the Fourth Proportional to 3,721.14, 5,135.40 and 2,149.34

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Solution

The fourth proportional to 3,721.14, 5,135.40 and 2,149.34 is: 2,966.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,721.14 : 5,135.40 = 2,149.34 : x
  2. Step 2: Convert to fraction form
    3,721.14/5,135.40 = 2,149.34/x
  3. Step 3: Cross multiply
    3,721.14x = 5,135.40 × 2,149.34
  4. Step 4: Simplify right side
    3,721.14x = 11,037,694.96
  5. Step 5: Solve for x
    x = 11,037,694.96/3,721.14
  6. Step 6: Final answer
    x = 2,966.21

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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.