Home / 3,187.63-4,399.34-1,790.38

Finding the Fourth Proportional to 3,187.63, 4,399.34 and 1,790.38

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Solution

The fourth proportional to 3,187.63, 4,399.34 and 1,790.38 is: 2,470.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,187.63 : 4,399.34 = 1,790.38 : x
  2. Step 2: Convert to fraction form
    3,187.63/4,399.34 = 1,790.38/x
  3. Step 3: Cross multiply
    3,187.63x = 4,399.34 × 1,790.38
  4. Step 4: Simplify right side
    3,187.63x = 7,876,459.40
  5. Step 5: Solve for x
    x = 7,876,459.40/3,187.63
  6. Step 6: Final answer
    x = 2,470.95

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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.