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Finding the Fourth Proportional to 6,670.46, 10,007.04 and 1,990.56

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Solution

The fourth proportional to 6,670.46, 10,007.04 and 1,990.56 is: 2,986.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,670.46 : 10,007.04 = 1,990.56 : x
  2. Step 2: Convert to fraction form
    6,670.46/10,007.04 = 1,990.56/x
  3. Step 3: Cross multiply
    6,670.46x = 10,007.04 × 1,990.56
  4. Step 4: Simplify right side
    6,670.46x = 19,919,613.54
  5. Step 5: Solve for x
    x = 19,919,613.54/6,670.46
  6. Step 6: Final answer
    x = 2,986.24

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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.