Home / 8,163.90-11,268.72-6,488.28

Finding the Fourth Proportional to 8,163.90, 11,268.72 and 6,488.28

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Solution

The fourth proportional to 8,163.90, 11,268.72 and 6,488.28 is: 8,955.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,163.90 : 11,268.72 = 6,488.28 : x
  2. Step 2: Convert to fraction form
    8,163.90/11,268.72 = 6,488.28/x
  3. Step 3: Cross multiply
    8,163.90x = 11,268.72 × 6,488.28
  4. Step 4: Simplify right side
    8,163.90x = 73,114,610.60
  5. Step 5: Solve for x
    x = 73,114,610.60/8,163.90
  6. Step 6: Final answer
    x = 8,955.84

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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.