Home / 3,189.15-4,785.12-1,240.68

Finding the Fourth Proportional to 3,189.15, 4,785.12 and 1,240.68

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Solution

The fourth proportional to 3,189.15, 4,785.12 and 1,240.68 is: 1,861.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,189.15 : 4,785.12 = 1,240.68 : x
  2. Step 2: Convert to fraction form
    3,189.15/4,785.12 = 1,240.68/x
  3. Step 3: Cross multiply
    3,189.15x = 4,785.12 × 1,240.68
  4. Step 4: Simplify right side
    3,189.15x = 5,936,802.68
  5. Step 5: Solve for x
    x = 5,936,802.68/3,189.15
  6. Step 6: Final answer
    x = 1,861.56

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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.