Home / 6,516.90-9,778.11-3,399.21

Finding the Fourth Proportional to 6,516.90, 9,778.11 and 3,399.21

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Solution

The fourth proportional to 6,516.90, 9,778.11 and 3,399.21 is: 5,100.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,516.90 : 9,778.11 = 3,399.21 : x
  2. Step 2: Convert to fraction form
    6,516.90/9,778.11 = 3,399.21/x
  3. Step 3: Cross multiply
    6,516.90x = 9,778.11 × 3,399.21
  4. Step 4: Simplify right side
    6,516.90x = 33,237,849.29
  5. Step 5: Solve for x
    x = 33,237,849.29/6,516.90
  6. Step 6: Final answer
    x = 5,100.25

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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.