Home / 3,738.59-5,158.05-2,166.38

Finding the Fourth Proportional to 3,738.59, 5,158.05 and 2,166.38

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Solution

The fourth proportional to 3,738.59, 5,158.05 and 2,166.38 is: 2,988.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,738.59 : 5,158.05 = 2,166.38 : x
  2. Step 2: Convert to fraction form
    3,738.59/5,158.05 = 2,166.38/x
  3. Step 3: Cross multiply
    3,738.59x = 5,158.05 × 2,166.38
  4. Step 4: Simplify right side
    3,738.59x = 11,174,296.36
  5. Step 5: Solve for x
    x = 11,174,296.36/3,738.59
  6. Step 6: Final answer
    x = 2,988.91

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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.