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Finding the Fourth Proportional to 8,400.05, 11,591.86 and 4,623.08

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Solution

The fourth proportional to 8,400.05, 11,591.86 and 4,623.08 is: 6,379.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,400.05 : 11,591.86 = 4,623.08 : x
  2. Step 2: Convert to fraction form
    8,400.05/11,591.86 = 4,623.08/x
  3. Step 3: Cross multiply
    8,400.05x = 11,591.86 × 4,623.08
  4. Step 4: Simplify right side
    8,400.05x = 53,590,035.28
  5. Step 5: Solve for x
    x = 53,590,035.28/8,400.05
  6. Step 6: Final answer
    x = 6,379.72

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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.