Home / 3,720.20-5,133.70-2,149.16

Finding the Fourth Proportional to 3,720.20, 5,133.70 and 2,149.16

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Solution

The fourth proportional to 3,720.20, 5,133.70 and 2,149.16 is: 2,965.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,720.20 : 5,133.70 = 2,149.16 : x
  2. Step 2: Convert to fraction form
    3,720.20/5,133.70 = 2,149.16/x
  3. Step 3: Cross multiply
    3,720.20x = 5,133.70 × 2,149.16
  4. Step 4: Simplify right side
    3,720.20x = 11,033,142.69
  5. Step 5: Solve for x
    x = 11,033,142.69/3,720.20
  6. Step 6: Final answer
    x = 2,965.74

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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.