Home / 3,977.62-5,489.08-2,160.63

Finding the Fourth Proportional to 3,977.62, 5,489.08 and 2,160.63

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Solution

The fourth proportional to 3,977.62, 5,489.08 and 2,160.63 is: 2,981.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,977.62 : 5,489.08 = 2,160.63 : x
  2. Step 2: Convert to fraction form
    3,977.62/5,489.08 = 2,160.63/x
  3. Step 3: Cross multiply
    3,977.62x = 5,489.08 × 2,160.63
  4. Step 4: Simplify right side
    3,977.62x = 11,859,865.52
  5. Step 5: Solve for x
    x = 11,859,865.52/3,977.62
  6. Step 6: Final answer
    x = 2,981.65

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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.