Home / 3,679.72-5,077.60-2,108.12

Finding the Fourth Proportional to 3,679.72, 5,077.60 and 2,108.12

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Solution

The fourth proportional to 3,679.72, 5,077.60 and 2,108.12 is: 2,908.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,679.72 : 5,077.60 = 2,108.12 : x
  2. Step 2: Convert to fraction form
    3,679.72/5,077.60 = 2,108.12/x
  3. Step 3: Cross multiply
    3,679.72x = 5,077.60 × 2,108.12
  4. Step 4: Simplify right side
    3,679.72x = 10,704,190.11
  5. Step 5: Solve for x
    x = 10,704,190.11/3,679.72
  6. Step 6: Final answer
    x = 2,908.97

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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.