Home / 7,160.86-10,731.39-5,170.62

Finding the Fourth Proportional to 7,160.86, 10,731.39 and 5,170.62

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Solution

The fourth proportional to 7,160.86, 10,731.39 and 5,170.62 is: 7,748.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,160.86 : 10,731.39 = 5,170.62 : x
  2. Step 2: Convert to fraction form
    7,160.86/10,731.39 = 5,170.62/x
  3. Step 3: Cross multiply
    7,160.86x = 10,731.39 × 5,170.62
  4. Step 4: Simplify right side
    7,160.86x = 55,487,939.76
  5. Step 5: Solve for x
    x = 55,487,939.76/7,160.86
  6. Step 6: Final answer
    x = 7,748.78

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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.