Home / 5,136.25-7,704.35-1,626.60

Finding the Fourth Proportional to 5,136.25, 7,704.35 and 1,626.60

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Solution

The fourth proportional to 5,136.25, 7,704.35 and 1,626.60 is: 2,439.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,136.25 : 7,704.35 = 1,626.60 : x
  2. Step 2: Convert to fraction form
    5,136.25/7,704.35 = 1,626.60/x
  3. Step 3: Cross multiply
    5,136.25x = 7,704.35 × 1,626.60
  4. Step 4: Simplify right side
    5,136.25x = 12,531,895.71
  5. Step 5: Solve for x
    x = 12,531,895.71/5,136.25
  6. Step 6: Final answer
    x = 2,439.89

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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.