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Finding the Fourth Proportional to 6,638.56, 9,161.68 and 4,750.32

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Solution

The fourth proportional to 6,638.56, 9,161.68 and 4,750.32 is: 6,555.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,638.56 : 9,161.68 = 4,750.32 : x
  2. Step 2: Convert to fraction form
    6,638.56/9,161.68 = 4,750.32/x
  3. Step 3: Cross multiply
    6,638.56x = 9,161.68 × 4,750.32
  4. Step 4: Simplify right side
    6,638.56x = 43,520,911.74
  5. Step 5: Solve for x
    x = 43,520,911.74/6,638.56
  6. Step 6: Final answer
    x = 6,555.78

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.