Home / 6,516.80-9,778.08-2,628.80

Finding the Fourth Proportional to 6,516.80, 9,778.08 and 2,628.80

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Solution

The fourth proportional to 6,516.80, 9,778.08 and 2,628.80 is: 3,944.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,516.80 : 9,778.08 = 2,628.80 : x
  2. Step 2: Convert to fraction form
    6,516.80/9,778.08 = 2,628.80/x
  3. Step 3: Cross multiply
    6,516.80x = 9,778.08 × 2,628.80
  4. Step 4: Simplify right side
    6,516.80x = 25,704,616.70
  5. Step 5: Solve for x
    x = 25,704,616.70/6,516.80
  6. Step 6: Final answer
    x = 3,944.36

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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.