Home / 4,120.68-5,684.40-2,721

Finding the Fourth Proportional to 4,120.68, 5,684.40 and 2,721

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Solution

The fourth proportional to 4,120.68, 5,684.40 and 2,721 is: 3,753.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,120.68 : 5,684.40 = 2,721 : x
  2. Step 2: Convert to fraction form
    4,120.68/5,684.40 = 2,721/x
  3. Step 3: Cross multiply
    4,120.68x = 5,684.40 × 2,721
  4. Step 4: Simplify right side
    4,120.68x = 15,467,252.40
  5. Step 5: Solve for x
    x = 15,467,252.40/4,120.68
  6. Step 6: Final answer
    x = 3,753.57

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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.