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Finding the Fourth Proportional to 8,285.61, 11,418.93 and 7,759.52

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Solution

The fourth proportional to 8,285.61, 11,418.93 and 7,759.52 is: 10,693.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,285.61 : 11,418.93 = 7,759.52 : x
  2. Step 2: Convert to fraction form
    8,285.61/11,418.93 = 7,759.52/x
  3. Step 3: Cross multiply
    8,285.61x = 11,418.93 × 7,759.52
  4. Step 4: Simplify right side
    8,285.61x = 88,605,358.62
  5. Step 5: Solve for x
    x = 88,605,358.62/8,285.61
  6. Step 6: Final answer
    x = 10,693.88

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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.