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Finding the Fourth Proportional to 2,137.28, 3,207.36 and 750.63

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Solution

The fourth proportional to 2,137.28, 3,207.36 and 750.63 is: 1,126.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,137.28 : 3,207.36 = 750.63 : x
  2. Step 2: Convert to fraction form
    2,137.28/3,207.36 = 750.63/x
  3. Step 3: Cross multiply
    2,137.28x = 3,207.36 × 750.63
  4. Step 4: Simplify right side
    2,137.28x = 2,407,540.64
  5. Step 5: Solve for x
    x = 2,407,540.64/2,137.28
  6. Step 6: Final answer
    x = 1,126.45

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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.