Home / 5,107.62-7,660.76-1,988.58

Finding the Fourth Proportional to 5,107.62, 7,660.76 and 1,988.58

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Solution

The fourth proportional to 5,107.62, 7,660.76 and 1,988.58 is: 2,982.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,107.62 : 7,660.76 = 1,988.58 : x
  2. Step 2: Convert to fraction form
    5,107.62/7,660.76 = 1,988.58/x
  3. Step 3: Cross multiply
    5,107.62x = 7,660.76 × 1,988.58
  4. Step 4: Simplify right side
    5,107.62x = 15,234,064.09
  5. Step 5: Solve for x
    x = 15,234,064.09/5,107.62
  6. Step 6: Final answer
    x = 2,982.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.