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Finding the Fourth Proportional to 7,368.15, 11,052 and 1,821.54

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Solution

The fourth proportional to 7,368.15, 11,052 and 1,821.54 is: 2,732.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,368.15 : 11,052 = 1,821.54 : x
  2. Step 2: Convert to fraction form
    7,368.15/11,052 = 1,821.54/x
  3. Step 3: Cross multiply
    7,368.15x = 11,052 × 1,821.54
  4. Step 4: Simplify right side
    7,368.15x = 20,131,660.08
  5. Step 5: Solve for x
    x = 20,131,660.08/7,368.15
  6. Step 6: Final answer
    x = 2,732.25

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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.