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Finding the Fourth Proportional to 2,389.06, 3,583.36 and 829.10

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Solution

The fourth proportional to 2,389.06, 3,583.36 and 829.10 is: 1,243.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,389.06 : 3,583.36 = 829.10 : x
  2. Step 2: Convert to fraction form
    2,389.06/3,583.36 = 829.10/x
  3. Step 3: Cross multiply
    2,389.06x = 3,583.36 × 829.10
  4. Step 4: Simplify right side
    2,389.06x = 2,970,963.78
  5. Step 5: Solve for x
    x = 2,970,963.78/2,389.06
  6. Step 6: Final answer
    x = 1,243.57

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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.