Home / 3,136.20-4,704.30-1,188.30

Finding the Fourth Proportional to 3,136.20, 4,704.30 and 1,188.30

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Solution

The fourth proportional to 3,136.20, 4,704.30 and 1,188.30 is: 1,782.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,136.20 : 4,704.30 = 1,188.30 : x
  2. Step 2: Convert to fraction form
    3,136.20/4,704.30 = 1,188.30/x
  3. Step 3: Cross multiply
    3,136.20x = 4,704.30 × 1,188.30
  4. Step 4: Simplify right side
    3,136.20x = 5,590,119.69
  5. Step 5: Solve for x
    x = 5,590,119.69/3,136.20
  6. Step 6: Final answer
    x = 1,782.45

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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.