Home / 3,136.50-4,704.75-1,288.62

Finding the Fourth Proportional to 3,136.50, 4,704.75 and 1,288.62

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Solution

The fourth proportional to 3,136.50, 4,704.75 and 1,288.62 is: 1,932.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,136.50 : 4,704.75 = 1,288.62 : x
  2. Step 2: Convert to fraction form
    3,136.50/4,704.75 = 1,288.62/x
  3. Step 3: Cross multiply
    3,136.50x = 4,704.75 × 1,288.62
  4. Step 4: Simplify right side
    3,136.50x = 6,062,634.95
  5. Step 5: Solve for x
    x = 6,062,634.95/3,136.50
  6. Step 6: Final answer
    x = 1,932.93

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Double scale
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Similar ratio
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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.