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Finding the Fourth Proportional to 6,611.17, 9,921.56 and 5,328.13

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Solution

The fourth proportional to 6,611.17, 9,921.56 and 5,328.13 is: 7,996.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,611.17 : 9,921.56 = 5,328.13 : x
  2. Step 2: Convert to fraction form
    6,611.17/9,921.56 = 5,328.13/x
  3. Step 3: Cross multiply
    6,611.17x = 9,921.56 × 5,328.13
  4. Step 4: Simplify right side
    6,611.17x = 52,863,361.48
  5. Step 5: Solve for x
    x = 52,863,361.48/6,611.17
  6. Step 6: Final answer
    x = 7,996.07

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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.