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Finding the Fourth Proportional to 8,689.16, 11,992.91 and 6,797.00

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Solution

The fourth proportional to 8,689.16, 11,992.91 and 6,797.00 is: 9,381.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,689.16 : 11,992.91 = 6,797.00 : x
  2. Step 2: Convert to fraction form
    8,689.16/11,992.91 = 6,797.00/x
  3. Step 3: Cross multiply
    8,689.16x = 11,992.91 × 6,797.00
  4. Step 4: Simplify right side
    8,689.16x = 81,515,715.32
  5. Step 5: Solve for x
    x = 81,515,715.32/8,689.16
  6. Step 6: Final answer
    x = 9,381.32

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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.