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Finding the Fourth Proportional to 8,644.80, 11,934.08 and 5,109.12

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Solution

The fourth proportional to 8,644.80, 11,934.08 and 5,109.12 is: 7,053.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,644.80 : 11,934.08 = 5,109.12 : x
  2. Step 2: Convert to fraction form
    8,644.80/11,934.08 = 5,109.12/x
  3. Step 3: Cross multiply
    8,644.80x = 11,934.08 × 5,109.12
  4. Step 4: Simplify right side
    8,644.80x = 60,972,646.81
  5. Step 5: Solve for x
    x = 60,972,646.81/8,644.80
  6. Step 6: Final answer
    x = 7,053.10

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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.