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Finding the Fourth Proportional to 7,243.43, 9,994.59 and 6,121.98

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Solution

The fourth proportional to 7,243.43, 9,994.59 and 6,121.98 is: 8,447.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,243.43 : 9,994.59 = 6,121.98 : x
  2. Step 2: Convert to fraction form
    7,243.43/9,994.59 = 6,121.98/x
  3. Step 3: Cross multiply
    7,243.43x = 9,994.59 × 6,121.98
  4. Step 4: Simplify right side
    7,243.43x = 61,186,680.09
  5. Step 5: Solve for x
    x = 61,186,680.09/7,243.43
  6. Step 6: Final answer
    x = 8,447.20

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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.