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Finding the Fourth Proportional to 2,280, 3,420.83 and 964.09

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Solution

The fourth proportional to 2,280, 3,420.83 and 964.09 is: 1,446.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,280 : 3,420.83 = 964.09 : x
  2. Step 2: Convert to fraction form
    2,280/3,420.83 = 964.09/x
  3. Step 3: Cross multiply
    2,280x = 3,420.83 × 964.09
  4. Step 4: Simplify right side
    2,280x = 3,297,987.99
  5. Step 5: Solve for x
    x = 3,297,987.99/2,280
  6. Step 6: Final answer
    x = 1,446.49

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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.