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Finding the Fourth Proportional to 7,007.89, 9,670.97 and 3,821.16

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Solution

The fourth proportional to 7,007.89, 9,670.97 and 3,821.16 is: 5,273.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,007.89 : 9,670.97 = 3,821.16 : x
  2. Step 2: Convert to fraction form
    7,007.89/9,670.97 = 3,821.16/x
  3. Step 3: Cross multiply
    7,007.89x = 9,670.97 × 3,821.16
  4. Step 4: Simplify right side
    7,007.89x = 36,954,304.62
  5. Step 5: Solve for x
    x = 36,954,304.62/7,007.89
  6. Step 6: Final answer
    x = 5,273.24

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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.