Home / 5,440-8,157.84-2,664.64

Finding the Fourth Proportional to 5,440, 8,157.84 and 2,664.64

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Solution

The fourth proportional to 5,440, 8,157.84 and 2,664.64 is: 3,995.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,440 : 8,157.84 = 2,664.64 : x
  2. Step 2: Convert to fraction form
    5,440/8,157.84 = 2,664.64/x
  3. Step 3: Cross multiply
    5,440x = 8,157.84 × 2,664.64
  4. Step 4: Simplify right side
    5,440x = 21,737,706.78
  5. Step 5: Solve for x
    x = 21,737,706.78/5,440
  6. Step 6: Final answer
    x = 3,995.90

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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.