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Finding the Fourth Proportional to 7,488.72, 11,235.16 and 2,872.08

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Solution

The fourth proportional to 7,488.72, 11,235.16 and 2,872.08 is: 4,308.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,488.72 : 11,235.16 = 2,872.08 : x
  2. Step 2: Convert to fraction form
    7,488.72/11,235.16 = 2,872.08/x
  3. Step 3: Cross multiply
    7,488.72x = 11,235.16 × 2,872.08
  4. Step 4: Simplify right side
    7,488.72x = 32,268,278.33
  5. Step 5: Solve for x
    x = 32,268,278.33/7,488.72
  6. Step 6: Final answer
    x = 4,308.92

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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.