Home / 6,519.62-9,780.80-2,136.74

Finding the Fourth Proportional to 6,519.62, 9,780.80 and 2,136.74

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Solution

The fourth proportional to 6,519.62, 9,780.80 and 2,136.74 is: 3,205.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,519.62 : 9,780.80 = 2,136.74 : x
  2. Step 2: Convert to fraction form
    6,519.62/9,780.80 = 2,136.74/x
  3. Step 3: Cross multiply
    6,519.62x = 9,780.80 × 2,136.74
  4. Step 4: Simplify right side
    6,519.62x = 20,898,967.00
  5. Step 5: Solve for x
    x = 20,898,967.00/6,519.62
  6. Step 6: Final answer
    x = 3,205.55

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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.