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Finding the Fourth Proportional to 5,406.88, 8,110.32 and 2,487.64

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Solution

The fourth proportional to 5,406.88, 8,110.32 and 2,487.64 is: 3,731.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,406.88 : 8,110.32 = 2,487.64 : x
  2. Step 2: Convert to fraction form
    5,406.88/8,110.32 = 2,487.64/x
  3. Step 3: Cross multiply
    5,406.88x = 8,110.32 × 2,487.64
  4. Step 4: Simplify right side
    5,406.88x = 20,175,556.44
  5. Step 5: Solve for x
    x = 20,175,556.44/5,406.88
  6. Step 6: Final answer
    x = 3,731.46

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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.