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Finding the Fourth Proportional to 7,488.13, 11,232.19 and 2,557.81

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Solution

The fourth proportional to 7,488.13, 11,232.19 and 2,557.81 is: 3,836.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,488.13 : 11,232.19 = 2,557.81 : x
  2. Step 2: Convert to fraction form
    7,488.13/11,232.19 = 2,557.81/x
  3. Step 3: Cross multiply
    7,488.13x = 11,232.19 × 2,557.81
  4. Step 4: Simplify right side
    7,488.13x = 28,729,832.34
  5. Step 5: Solve for x
    x = 28,729,832.34/7,488.13
  6. Step 6: Final answer
    x = 3,836.72

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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.