Home / 6,519.20-9,776.40-2,136.80

Finding the Fourth Proportional to 6,519.20, 9,776.40 and 2,136.80

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Solution

The fourth proportional to 6,519.20, 9,776.40 and 2,136.80 is: 3,204.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,519.20 : 9,776.40 = 2,136.80 : x
  2. Step 2: Convert to fraction form
    6,519.20/9,776.40 = 2,136.80/x
  3. Step 3: Cross multiply
    6,519.20x = 9,776.40 × 2,136.80
  4. Step 4: Simplify right side
    6,519.20x = 20,890,211.52
  5. Step 5: Solve for x
    x = 20,890,211.52/6,519.20
  6. Step 6: Final answer
    x = 3,204.41

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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.