Home / 6,515.20-9,772.80-2,133.10

Finding the Fourth Proportional to 6,515.20, 9,772.80 and 2,133.10

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Solution

The fourth proportional to 6,515.20, 9,772.80 and 2,133.10 is: 3,199.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,515.20 : 9,772.80 = 2,133.10 : x
  2. Step 2: Convert to fraction form
    6,515.20/9,772.80 = 2,133.10/x
  3. Step 3: Cross multiply
    6,515.20x = 9,772.80 × 2,133.10
  4. Step 4: Simplify right side
    6,515.20x = 20,846,359.68
  5. Step 5: Solve for x
    x = 20,846,359.68/6,515.20
  6. Step 6: Final answer
    x = 3,199.65

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Similar ratio
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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.