Home / 8,290.78-11,433.39-6,399.34

Finding the Fourth Proportional to 8,290.78, 11,433.39 and 6,399.34

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Solution

The fourth proportional to 8,290.78, 11,433.39 and 6,399.34 is: 8,825.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,290.78 : 11,433.39 = 6,399.34 : x
  2. Step 2: Convert to fraction form
    8,290.78/11,433.39 = 6,399.34/x
  3. Step 3: Cross multiply
    8,290.78x = 11,433.39 × 6,399.34
  4. Step 4: Simplify right side
    8,290.78x = 73,166,149.96
  5. Step 5: Solve for x
    x = 73,166,149.96/8,290.78
  6. Step 6: Final answer
    x = 8,825.00

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.