Home / 3,865.69-5,333.19-2,859.80

Finding the Fourth Proportional to 3,865.69, 5,333.19 and 2,859.80

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Solution

The fourth proportional to 3,865.69, 5,333.19 and 2,859.80 is: 3,945.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,865.69 : 5,333.19 = 2,859.80 : x
  2. Step 2: Convert to fraction form
    3,865.69/5,333.19 = 2,859.80/x
  3. Step 3: Cross multiply
    3,865.69x = 5,333.19 × 2,859.80
  4. Step 4: Simplify right side
    3,865.69x = 15,251,856.76
  5. Step 5: Solve for x
    x = 15,251,856.76/3,865.69
  6. Step 6: Final answer
    x = 3,945.44

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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.