Home / 5,160.72-7,171.20-5,107.20

Finding the Fourth Proportional to 5,160.72, 7,171.20 and 5,107.20

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Solution

The fourth proportional to 5,160.72, 7,171.20 and 5,107.20 is: 7,096.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,160.72 : 7,171.20 = 5,107.20 : x
  2. Step 2: Convert to fraction form
    5,160.72/7,171.20 = 5,107.20/x
  3. Step 3: Cross multiply
    5,160.72x = 7,171.20 × 5,107.20
  4. Step 4: Simplify right side
    5,160.72x = 36,624,752.64
  5. Step 5: Solve for x
    x = 36,624,752.64/5,160.72
  6. Step 6: Final answer
    x = 7,096.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.