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Finding the Fourth Proportional to 6,611.98, 9,915.80 and 2,228.36

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Solution

The fourth proportional to 6,611.98, 9,915.80 and 2,228.36 is: 3,341.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,611.98 : 9,915.80 = 2,228.36 : x
  2. Step 2: Convert to fraction form
    6,611.98/9,915.80 = 2,228.36/x
  3. Step 3: Cross multiply
    6,611.98x = 9,915.80 × 2,228.36
  4. Step 4: Simplify right side
    6,611.98x = 22,095,972.09
  5. Step 5: Solve for x
    x = 22,095,972.09/6,611.98
  6. Step 6: Final answer
    x = 3,341.81

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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.