Home / 3,189.22-4,785.69-1,340.19

Finding the Fourth Proportional to 3,189.22, 4,785.69 and 1,340.19

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Solution

The fourth proportional to 3,189.22, 4,785.69 and 1,340.19 is: 2,011.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,189.22 : 4,785.69 = 1,340.19 : x
  2. Step 2: Convert to fraction form
    3,189.22/4,785.69 = 1,340.19/x
  3. Step 3: Cross multiply
    3,189.22x = 4,785.69 × 1,340.19
  4. Step 4: Simplify right side
    3,189.22x = 6,413,733.88
  5. Step 5: Solve for x
    x = 6,413,733.88/3,189.22
  6. Step 6: Final answer
    x = 2,011.07

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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.