Home / 4,087.20-5,640.13-2,319.38

Finding the Fourth Proportional to 4,087.20, 5,640.13 and 2,319.38

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Solution

The fourth proportional to 4,087.20, 5,640.13 and 2,319.38 is: 3,200.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,087.20 : 5,640.13 = 2,319.38 : x
  2. Step 2: Convert to fraction form
    4,087.20/5,640.13 = 2,319.38/x
  3. Step 3: Cross multiply
    4,087.20x = 5,640.13 × 2,319.38
  4. Step 4: Simplify right side
    4,087.20x = 13,081,604.72
  5. Step 5: Solve for x
    x = 13,081,604.72/4,087.20
  6. Step 6: Final answer
    x = 3,200.63

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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.