Home / 3,820.87-5,272.95-2,476.78

Finding the Fourth Proportional to 3,820.87, 5,272.95 and 2,476.78

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Solution

The fourth proportional to 3,820.87, 5,272.95 and 2,476.78 is: 3,418.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,820.87 : 5,272.95 = 2,476.78 : x
  2. Step 2: Convert to fraction form
    3,820.87/5,272.95 = 2,476.78/x
  3. Step 3: Cross multiply
    3,820.87x = 5,272.95 × 2,476.78
  4. Step 4: Simplify right side
    3,820.87x = 13,059,919.27
  5. Step 5: Solve for x
    x = 13,059,919.27/3,820.87
  6. Step 6: Final answer
    x = 3,418.05

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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.