Home / 8,284.28-11,398.74-8,087.36

Finding the Fourth Proportional to 8,284.28, 11,398.74 and 8,087.36

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Solution

The fourth proportional to 8,284.28, 11,398.74 and 8,087.36 is: 11,127.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,284.28 : 11,398.74 = 8,087.36 : x
  2. Step 2: Convert to fraction form
    8,284.28/11,398.74 = 8,087.36/x
  3. Step 3: Cross multiply
    8,284.28x = 11,398.74 × 8,087.36
  4. Step 4: Simplify right side
    8,284.28x = 92,185,713.93
  5. Step 5: Solve for x
    x = 92,185,713.93/8,284.28
  6. Step 6: Final answer
    x = 11,127.79

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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.