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Finding the Fourth Proportional to 4,991.85, 7,488.72 and 1,704.87

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Solution

The fourth proportional to 4,991.85, 7,488.72 and 1,704.87 is: 2,557.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,991.85 : 7,488.72 = 1,704.87 : x
  2. Step 2: Convert to fraction form
    4,991.85/7,488.72 = 1,704.87/x
  3. Step 3: Cross multiply
    4,991.85x = 7,488.72 × 1,704.87
  4. Step 4: Simplify right side
    4,991.85x = 12,767,294.07
  5. Step 5: Solve for x
    x = 12,767,294.07/4,991.85
  6. Step 6: Final answer
    x = 2,557.63

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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.