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Finding the Fourth Proportional to 7,230.87, 9,978.53 and 4,044.23

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Solution

The fourth proportional to 7,230.87, 9,978.53 and 4,044.23 is: 5,580.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,230.87 : 9,978.53 = 4,044.23 : x
  2. Step 2: Convert to fraction form
    7,230.87/9,978.53 = 4,044.23/x
  3. Step 3: Cross multiply
    7,230.87x = 9,978.53 × 4,044.23
  4. Step 4: Simplify right side
    7,230.87x = 40,355,437.69
  5. Step 5: Solve for x
    x = 40,355,437.69/7,230.87
  6. Step 6: Final answer
    x = 5,580.99

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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.