Home / 3,380.77-4,665.53-2,121.87

Finding the Fourth Proportional to 3,380.77, 4,665.53 and 2,121.87

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Solution

The fourth proportional to 3,380.77, 4,665.53 and 2,121.87 is: 2,928.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,380.77 : 4,665.53 = 2,121.87 : x
  2. Step 2: Convert to fraction form
    3,380.77/4,665.53 = 2,121.87/x
  3. Step 3: Cross multiply
    3,380.77x = 4,665.53 × 2,121.87
  4. Step 4: Simplify right side
    3,380.77x = 9,899,648.14
  5. Step 5: Solve for x
    x = 9,899,648.14/3,380.77
  6. Step 6: Final answer
    x = 2,928.22

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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.