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Finding the Fourth Proportional to 7,188.57, 9,921.15 and 4,045.37

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Solution

The fourth proportional to 7,188.57, 9,921.15 and 4,045.37 is: 5,583.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,188.57 : 9,921.15 = 4,045.37 : x
  2. Step 2: Convert to fraction form
    7,188.57/9,921.15 = 4,045.37/x
  3. Step 3: Cross multiply
    7,188.57x = 9,921.15 × 4,045.37
  4. Step 4: Simplify right side
    7,188.57x = 40,134,672.97
  5. Step 5: Solve for x
    x = 40,134,672.97/7,188.57
  6. Step 6: Final answer
    x = 5,583.12

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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.