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Finding the Fourth Proportional to 8,522.77, 11,760.76 and 4,985.65

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Solution

The fourth proportional to 8,522.77, 11,760.76 and 4,985.65 is: 6,879.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,522.77 : 11,760.76 = 4,985.65 : x
  2. Step 2: Convert to fraction form
    8,522.77/11,760.76 = 4,985.65/x
  3. Step 3: Cross multiply
    8,522.77x = 11,760.76 × 4,985.65
  4. Step 4: Simplify right side
    8,522.77x = 58,635,033.09
  5. Step 5: Solve for x
    x = 58,635,033.09/8,522.77
  6. Step 6: Final answer
    x = 6,879.81

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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.