Home / 4,147.21-5,717.10-3,150.75

Finding the Fourth Proportional to 4,147.21, 5,717.10 and 3,150.75

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Solution

The fourth proportional to 4,147.21, 5,717.10 and 3,150.75 is: 4,343.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,147.21 : 5,717.10 = 3,150.75 : x
  2. Step 2: Convert to fraction form
    4,147.21/5,717.10 = 3,150.75/x
  3. Step 3: Cross multiply
    4,147.21x = 5,717.10 × 3,150.75
  4. Step 4: Simplify right side
    4,147.21x = 18,013,152.83
  5. Step 5: Solve for x
    x = 18,013,152.83/4,147.21
  6. Step 6: Final answer
    x = 4,343.44

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Half scale
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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.