Home / 3,910.59-5,403.65-2,789.60

Finding the Fourth Proportional to 3,910.59, 5,403.65 and 2,789.60

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Solution

The fourth proportional to 3,910.59, 5,403.65 and 2,789.60 is: 3,854.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,910.59 : 5,403.65 = 2,789.60 : x
  2. Step 2: Convert to fraction form
    3,910.59/5,403.65 = 2,789.60/x
  3. Step 3: Cross multiply
    3,910.59x = 5,403.65 × 2,789.60
  4. Step 4: Simplify right side
    3,910.59x = 15,073,981.07
  5. Step 5: Solve for x
    x = 15,073,981.07/3,910.59
  6. Step 6: Final answer
    x = 3,854.66

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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.