Home / 4,092.40-6,136.57-1,280.80

Finding the Fourth Proportional to 4,092.40, 6,136.57 and 1,280.80

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Solution

The fourth proportional to 4,092.40, 6,136.57 and 1,280.80 is: 1,920.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,092.40 : 6,136.57 = 1,280.80 : x
  2. Step 2: Convert to fraction form
    4,092.40/6,136.57 = 1,280.80/x
  3. Step 3: Cross multiply
    4,092.40x = 6,136.57 × 1,280.80
  4. Step 4: Simplify right side
    4,092.40x = 7,859,718.86
  5. Step 5: Solve for x
    x = 7,859,718.86/4,092.40
  6. Step 6: Final answer
    x = 1,920.56

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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.