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Finding the Fourth Proportional to 8,406.17, 11,601.90 and 6,412.96

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Solution

The fourth proportional to 8,406.17, 11,601.90 and 6,412.96 is: 8,850.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,406.17 : 11,601.90 = 6,412.96 : x
  2. Step 2: Convert to fraction form
    8,406.17/11,601.90 = 6,412.96/x
  3. Step 3: Cross multiply
    8,406.17x = 11,601.90 × 6,412.96
  4. Step 4: Simplify right side
    8,406.17x = 74,402,488.56
  5. Step 5: Solve for x
    x = 74,402,488.56/8,406.17
  6. Step 6: Final answer
    x = 8,850.94

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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.