Home / 3,772.85-5,205.11-2,780.49

Finding the Fourth Proportional to 3,772.85, 5,205.11 and 2,780.49

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Solution

The fourth proportional to 3,772.85, 5,205.11 and 2,780.49 is: 3,836.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,772.85 : 5,205.11 = 2,780.49 : x
  2. Step 2: Convert to fraction form
    3,772.85/5,205.11 = 2,780.49/x
  3. Step 3: Cross multiply
    3,772.85x = 5,205.11 × 2,780.49
  4. Step 4: Simplify right side
    3,772.85x = 14,472,742.40
  5. Step 5: Solve for x
    x = 14,472,742.40/3,772.85
  6. Step 6: Final answer
    x = 3,836.03

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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.