Home / 8,071.64-11,115.69-7,268.12

Finding the Fourth Proportional to 8,071.64, 11,115.69 and 7,268.12

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Solution

The fourth proportional to 8,071.64, 11,115.69 and 7,268.12 is: 10,009.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,071.64 : 11,115.69 = 7,268.12 : x
  2. Step 2: Convert to fraction form
    8,071.64/11,115.69 = 7,268.12/x
  3. Step 3: Cross multiply
    8,071.64x = 11,115.69 × 7,268.12
  4. Step 4: Simplify right side
    8,071.64x = 80,790,168.80
  5. Step 5: Solve for x
    x = 80,790,168.80/8,071.64
  6. Step 6: Final answer
    x = 10,009.14

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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.