Home / 3,990.07-5,504.87-2,310.56

Finding the Fourth Proportional to 3,990.07, 5,504.87 and 2,310.56

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Solution

The fourth proportional to 3,990.07, 5,504.87 and 2,310.56 is: 3,187.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,990.07 : 5,504.87 = 2,310.56 : x
  2. Step 2: Convert to fraction form
    3,990.07/5,504.87 = 2,310.56/x
  3. Step 3: Cross multiply
    3,990.07x = 5,504.87 × 2,310.56
  4. Step 4: Simplify right side
    3,990.07x = 12,719,332.43
  5. Step 5: Solve for x
    x = 12,719,332.43/3,990.07
  6. Step 6: Final answer
    x = 3,187.75

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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.