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Finding the Fourth Proportional to 2,492.64, 3,738.94 and 761.26

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Solution

The fourth proportional to 2,492.64, 3,738.94 and 761.26 is: 1,141.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,492.64 : 3,738.94 = 761.26 : x
  2. Step 2: Convert to fraction form
    2,492.64/3,738.94 = 761.26/x
  3. Step 3: Cross multiply
    2,492.64x = 3,738.94 × 761.26
  4. Step 4: Simplify right side
    2,492.64x = 2,846,305.46
  5. Step 5: Solve for x
    x = 2,846,305.46/2,492.64
  6. Step 6: Final answer
    x = 1,141.88

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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.