Home / 5,145.18-7,745.88-3,512.10

Finding the Fourth Proportional to 5,145.18, 7,745.88 and 3,512.10

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Solution

The fourth proportional to 5,145.18, 7,745.88 and 3,512.10 is: 5,287.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,145.18 : 7,745.88 = 3,512.10 : x
  2. Step 2: Convert to fraction form
    5,145.18/7,745.88 = 3,512.10/x
  3. Step 3: Cross multiply
    5,145.18x = 7,745.88 × 3,512.10
  4. Step 4: Simplify right side
    5,145.18x = 27,204,305.15
  5. Step 5: Solve for x
    x = 27,204,305.15/5,145.18
  6. Step 6: Final answer
    x = 5,287.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.