Home / 3,155.22-4,720.41-2,785.86

Finding the Fourth Proportional to 3,155.22, 4,720.41 and 2,785.86

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Solution

The fourth proportional to 3,155.22, 4,720.41 and 2,785.86 is: 4,167.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,155.22 : 4,720.41 = 2,785.86 : x
  2. Step 2: Convert to fraction form
    3,155.22/4,720.41 = 2,785.86/x
  3. Step 3: Cross multiply
    3,155.22x = 4,720.41 × 2,785.86
  4. Step 4: Simplify right side
    3,155.22x = 13,150,401.40
  5. Step 5: Solve for x
    x = 13,150,401.40/3,155.22
  6. Step 6: Final answer
    x = 4,167.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.