Home / 3,785.88-5,220.21-2,666.46

Finding the Fourth Proportional to 3,785.88, 5,220.21 and 2,666.46

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Solution

The fourth proportional to 3,785.88, 5,220.21 and 2,666.46 is: 3,676.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,785.88 : 5,220.21 = 2,666.46 : x
  2. Step 2: Convert to fraction form
    3,785.88/5,220.21 = 2,666.46/x
  3. Step 3: Cross multiply
    3,785.88x = 5,220.21 × 2,666.46
  4. Step 4: Simplify right side
    3,785.88x = 13,919,481.16
  5. Step 5: Solve for x
    x = 13,919,481.16/3,785.88
  6. Step 6: Final answer
    x = 3,676.68

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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.