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Finding the Fourth Proportional to 8,185.61, 11,311.43 and 6,973.65

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Solution

The fourth proportional to 8,185.61, 11,311.43 and 6,973.65 is: 9,636.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,185.61 : 11,311.43 = 6,973.65 : x
  2. Step 2: Convert to fraction form
    8,185.61/11,311.43 = 6,973.65/x
  3. Step 3: Cross multiply
    8,185.61x = 11,311.43 × 6,973.65
  4. Step 4: Simplify right side
    8,185.61x = 78,881,918.95
  5. Step 5: Solve for x
    x = 78,881,918.95/8,185.61
  6. Step 6: Final answer
    x = 9,636.66

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Double scale
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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.