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Finding the Fourth Proportional to 7,410.65, 11,112.74 and 2,215.31

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Solution

The fourth proportional to 7,410.65, 11,112.74 and 2,215.31 is: 3,322.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,410.65 : 11,112.74 = 2,215.31 : x
  2. Step 2: Convert to fraction form
    7,410.65/11,112.74 = 2,215.31/x
  3. Step 3: Cross multiply
    7,410.65x = 11,112.74 × 2,215.31
  4. Step 4: Simplify right side
    7,410.65x = 24,618,152.97
  5. Step 5: Solve for x
    x = 24,618,152.97/7,410.65
  6. Step 6: Final answer
    x = 3,322.00

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