Home / 3,640.13-5,018.29-3,078.34

Finding the Fourth Proportional to 3,640.13, 5,018.29 and 3,078.34

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Solution

The fourth proportional to 3,640.13, 5,018.29 and 3,078.34 is: 4,243.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,640.13 : 5,018.29 = 3,078.34 : x
  2. Step 2: Convert to fraction form
    3,640.13/5,018.29 = 3,078.34/x
  3. Step 3: Cross multiply
    3,640.13x = 5,018.29 × 3,078.34
  4. Step 4: Simplify right side
    3,640.13x = 15,448,002.84
  5. Step 5: Solve for x
    x = 15,448,002.84/3,640.13
  6. Step 6: Final answer
    x = 4,243.81

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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.