Home / 7,151.50-10,728.60-5,072.14

Finding the Fourth Proportional to 7,151.50, 10,728.60 and 5,072.14

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Solution

The fourth proportional to 7,151.50, 10,728.60 and 5,072.14 is: 7,609.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,151.50 : 10,728.60 = 5,072.14 : x
  2. Step 2: Convert to fraction form
    7,151.50/10,728.60 = 5,072.14/x
  3. Step 3: Cross multiply
    7,151.50x = 10,728.60 × 5,072.14
  4. Step 4: Simplify right side
    7,151.50x = 54,416,961.20
  5. Step 5: Solve for x
    x = 54,416,961.20/7,151.50
  6. Step 6: Final answer
    x = 7,609.17

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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.