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Finding the Fourth Proportional to 2,376.62, 3,563 and 990.99

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Solution

The fourth proportional to 2,376.62, 3,563 and 990.99 is: 1,485.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,376.62 : 3,563 = 990.99 : x
  2. Step 2: Convert to fraction form
    2,376.62/3,563 = 990.99/x
  3. Step 3: Cross multiply
    2,376.62x = 3,563 × 990.99
  4. Step 4: Simplify right side
    2,376.62x = 3,530,897.37
  5. Step 5: Solve for x
    x = 3,530,897.37/2,376.62
  6. Step 6: Final answer
    x = 1,485.68

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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.