Home / 3,785.63-5,221.55-2,458.85

Finding the Fourth Proportional to 3,785.63, 5,221.55 and 2,458.85

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Solution

The fourth proportional to 3,785.63, 5,221.55 and 2,458.85 is: 3,391.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,785.63 : 5,221.55 = 2,458.85 : x
  2. Step 2: Convert to fraction form
    3,785.63/5,221.55 = 2,458.85/x
  3. Step 3: Cross multiply
    3,785.63x = 5,221.55 × 2,458.85
  4. Step 4: Simplify right side
    3,785.63x = 12,838,995.92
  5. Step 5: Solve for x
    x = 12,838,995.92/3,785.63
  6. Step 6: Final answer
    x = 3,391.51

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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.