Home / 4,136.80-6,212.40-2,912.80

Finding the Fourth Proportional to 4,136.80, 6,212.40 and 2,912.80

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Solution

The fourth proportional to 4,136.80, 6,212.40 and 2,912.80 is: 4,374.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,136.80 : 6,212.40 = 2,912.80 : x
  2. Step 2: Convert to fraction form
    4,136.80/6,212.40 = 2,912.80/x
  3. Step 3: Cross multiply
    4,136.80x = 6,212.40 × 2,912.80
  4. Step 4: Simplify right side
    4,136.80x = 18,095,478.72
  5. Step 5: Solve for x
    x = 18,095,478.72/4,136.80
  6. Step 6: Final answer
    x = 4,374.27

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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.