Home / 8,728.68-13,086.48-5,265.12

Finding the Fourth Proportional to 8,728.68, 13,086.48 and 5,265.12

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Solution

The fourth proportional to 8,728.68, 13,086.48 and 5,265.12 is: 7,893.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,728.68 : 13,086.48 = 5,265.12 : x
  2. Step 2: Convert to fraction form
    8,728.68/13,086.48 = 5,265.12/x
  3. Step 3: Cross multiply
    8,728.68x = 13,086.48 × 5,265.12
  4. Step 4: Simplify right side
    8,728.68x = 68,901,887.58
  5. Step 5: Solve for x
    x = 68,901,887.58/8,728.68
  6. Step 6: Final answer
    x = 7,893.74

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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.