Home / 3,844.85-5,305.45-2,166.21

Finding the Fourth Proportional to 3,844.85, 5,305.45 and 2,166.21

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Solution

The fourth proportional to 3,844.85, 5,305.45 and 2,166.21 is: 2,989.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,844.85 : 5,305.45 = 2,166.21 : x
  2. Step 2: Convert to fraction form
    3,844.85/5,305.45 = 2,166.21/x
  3. Step 3: Cross multiply
    3,844.85x = 5,305.45 × 2,166.21
  4. Step 4: Simplify right side
    3,844.85x = 11,492,717.49
  5. Step 5: Solve for x
    x = 11,492,717.49/3,844.85
  6. Step 6: Final answer
    x = 2,989.12

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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.