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Finding the Fourth Proportional to 8,368.12, 11,536.45 and 8,109.33

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Solution

The fourth proportional to 8,368.12, 11,536.45 and 8,109.33 is: 11,179.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,368.12 : 11,536.45 = 8,109.33 : x
  2. Step 2: Convert to fraction form
    8,368.12/11,536.45 = 8,109.33/x
  3. Step 3: Cross multiply
    8,368.12x = 11,536.45 × 8,109.33
  4. Step 4: Simplify right side
    8,368.12x = 93,552,880.08
  5. Step 5: Solve for x
    x = 93,552,880.08/8,368.12
  6. Step 6: Final answer
    x = 11,179.68

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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.