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Finding the Fourth Proportional to 8,635.99, 11,866.02 and 6,864.52

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Solution

The fourth proportional to 8,635.99, 11,866.02 and 6,864.52 is: 9,431.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,635.99 : 11,866.02 = 6,864.52 : x
  2. Step 2: Convert to fraction form
    8,635.99/11,866.02 = 6,864.52/x
  3. Step 3: Cross multiply
    8,635.99x = 11,866.02 × 6,864.52
  4. Step 4: Simplify right side
    8,635.99x = 81,454,531.61
  5. Step 5: Solve for x
    x = 81,454,531.61/8,635.99
  6. Step 6: Final answer
    x = 9,431.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.