Home / 6,395.05-8,819.77-4,155.20

Finding the Fourth Proportional to 6,395.05, 8,819.77 and 4,155.20

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Solution

The fourth proportional to 6,395.05, 8,819.77 and 4,155.20 is: 5,730.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,395.05 : 8,819.77 = 4,155.20 : x
  2. Step 2: Convert to fraction form
    6,395.05/8,819.77 = 4,155.20/x
  3. Step 3: Cross multiply
    6,395.05x = 8,819.77 × 4,155.20
  4. Step 4: Simplify right side
    6,395.05x = 36,647,843.43
  5. Step 5: Solve for x
    x = 36,647,843.43/6,395.05
  6. Step 6: Final answer
    x = 5,730.66

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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.