Home / 8,165.20-11,268.28-4,628.72

Finding the Fourth Proportional to 8,165.20, 11,268.28 and 4,628.72

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Solution

The fourth proportional to 8,165.20, 11,268.28 and 4,628.72 is: 6,387.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,165.20 : 11,268.28 = 4,628.72 : x
  2. Step 2: Convert to fraction form
    8,165.20/11,268.28 = 4,628.72/x
  3. Step 3: Cross multiply
    8,165.20x = 11,268.28 × 4,628.72
  4. Step 4: Simplify right side
    8,165.20x = 52,157,713.00
  5. Step 5: Solve for x
    x = 52,157,713.00/8,165.20
  6. Step 6: Final answer
    x = 6,387.81

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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.