Home / 3,187.83-4,399.47-1,771.65

Finding the Fourth Proportional to 3,187.83, 4,399.47 and 1,771.65

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Solution

The fourth proportional to 3,187.83, 4,399.47 and 1,771.65 is: 2,445.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,187.83 : 4,399.47 = 1,771.65 : x
  2. Step 2: Convert to fraction form
    3,187.83/4,399.47 = 1,771.65/x
  3. Step 3: Cross multiply
    3,187.83x = 4,399.47 × 1,771.65
  4. Step 4: Simplify right side
    3,187.83x = 7,794,321.03
  5. Step 5: Solve for x
    x = 7,794,321.03/3,187.83
  6. Step 6: Final answer
    x = 2,445.02

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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.