Home / 3,187.99-4,399.44-1,861.45

Finding the Fourth Proportional to 3,187.99, 4,399.44 and 1,861.45

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Solution

The fourth proportional to 3,187.99, 4,399.44 and 1,861.45 is: 2,568.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,187.99 : 4,399.44 = 1,861.45 : x
  2. Step 2: Convert to fraction form
    3,187.99/4,399.44 = 1,861.45/x
  3. Step 3: Cross multiply
    3,187.99x = 4,399.44 × 1,861.45
  4. Step 4: Simplify right side
    3,187.99x = 8,189,337.59
  5. Step 5: Solve for x
    x = 8,189,337.59/3,187.99
  6. Step 6: Final answer
    x = 2,568.81

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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.