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Finding the Fourth Proportional to 3,762.35, 5,643.38 and 1,789.40

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Solution

The fourth proportional to 3,762.35, 5,643.38 and 1,789.40 is: 2,684.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,762.35 : 5,643.38 = 1,789.40 : x
  2. Step 2: Convert to fraction form
    3,762.35/5,643.38 = 1,789.40/x
  3. Step 3: Cross multiply
    3,762.35x = 5,643.38 × 1,789.40
  4. Step 4: Simplify right side
    3,762.35x = 10,098,227.01
  5. Step 5: Solve for x
    x = 10,098,227.01/3,762.35
  6. Step 6: Final answer
    x = 2,684.02

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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.