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Finding the Fourth Proportional to 8,129.62, 11,218.90 and 4,403.62

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Solution

The fourth proportional to 8,129.62, 11,218.90 and 4,403.62 is: 6,077.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,129.62 : 11,218.90 = 4,403.62 : x
  2. Step 2: Convert to fraction form
    8,129.62/11,218.90 = 4,403.62/x
  3. Step 3: Cross multiply
    8,129.62x = 11,218.90 × 4,403.62
  4. Step 4: Simplify right side
    8,129.62x = 49,403,772.42
  5. Step 5: Solve for x
    x = 49,403,772.42/8,129.62
  6. Step 6: Final answer
    x = 6,077.01

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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.