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Finding the Fourth Proportional to 4,991.56, 7,487.40 and 1,704.40

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Solution

The fourth proportional to 4,991.56, 7,487.40 and 1,704.40 is: 2,556.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,991.56 : 7,487.40 = 1,704.40 : x
  2. Step 2: Convert to fraction form
    4,991.56/7,487.40 = 1,704.40/x
  3. Step 3: Cross multiply
    4,991.56x = 7,487.40 × 1,704.40
  4. Step 4: Simplify right side
    4,991.56x = 12,761,524.56
  5. Step 5: Solve for x
    x = 12,761,524.56/4,991.56
  6. Step 6: Final answer
    x = 2,556.62

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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.