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Finding the Fourth Proportional to 5,516.38, 7,611.06 and 5,239.36

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Solution

The fourth proportional to 5,516.38, 7,611.06 and 5,239.36 is: 7,228.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,516.38 : 7,611.06 = 5,239.36 : x
  2. Step 2: Convert to fraction form
    5,516.38/7,611.06 = 5,239.36/x
  3. Step 3: Cross multiply
    5,516.38x = 7,611.06 × 5,239.36
  4. Step 4: Simplify right side
    5,516.38x = 39,877,083.32
  5. Step 5: Solve for x
    x = 39,877,083.32/5,516.38
  6. Step 6: Final answer
    x = 7,228.85

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Half scale
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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.