Home / 3,845.21-5,305.92-2,666.66

Finding the Fourth Proportional to 3,845.21, 5,305.92 and 2,666.66

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Solution

The fourth proportional to 3,845.21, 5,305.92 and 2,666.66 is: 3,679.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,845.21 : 5,305.92 = 2,666.66 : x
  2. Step 2: Convert to fraction form
    3,845.21/5,305.92 = 2,666.66/x
  3. Step 3: Cross multiply
    3,845.21x = 5,305.92 × 2,666.66
  4. Step 4: Simplify right side
    3,845.21x = 14,149,084.63
  5. Step 5: Solve for x
    x = 14,149,084.63/3,845.21
  6. Step 6: Final answer
    x = 3,679.66

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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.