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Finding the Fourth Proportional to 3,689.55, 5,532.23 and 1,223.00

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Solution

The fourth proportional to 3,689.55, 5,532.23 and 1,223.00 is: 1,833.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,689.55 : 5,532.23 = 1,223.00 : x
  2. Step 2: Convert to fraction form
    3,689.55/5,532.23 = 1,223.00/x
  3. Step 3: Cross multiply
    3,689.55x = 5,532.23 × 1,223.00
  4. Step 4: Simplify right side
    3,689.55x = 6,765,913.43
  5. Step 5: Solve for x
    x = 6,765,913.43/3,689.55
  6. Step 6: Final answer
    x = 1,833.80

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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.