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Finding the Fourth Proportional to 7,818.00, 11,728.21 and 2,625.09

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Solution

The fourth proportional to 7,818.00, 11,728.21 and 2,625.09 is: 3,938.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,818.00 : 11,728.21 = 2,625.09 : x
  2. Step 2: Convert to fraction form
    7,818.00/11,728.21 = 2,625.09/x
  3. Step 3: Cross multiply
    7,818.00x = 11,728.21 × 2,625.09
  4. Step 4: Simplify right side
    7,818.00x = 30,787,562.81
  5. Step 5: Solve for x
    x = 30,787,562.81/7,818.00
  6. Step 6: Final answer
    x = 3,938.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.