Home / 3,847.56-5,306.60-2,785.47

Finding the Fourth Proportional to 3,847.56, 5,306.60 and 2,785.47

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Solution

The fourth proportional to 3,847.56, 5,306.60 and 2,785.47 is: 3,841.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,847.56 : 5,306.60 = 2,785.47 : x
  2. Step 2: Convert to fraction form
    3,847.56/5,306.60 = 2,785.47/x
  3. Step 3: Cross multiply
    3,847.56x = 5,306.60 × 2,785.47
  4. Step 4: Simplify right side
    3,847.56x = 14,781,361.17
  5. Step 5: Solve for x
    x = 14,781,361.17/3,847.56
  6. Step 6: Final answer
    x = 3,841.75

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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.