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Finding the Fourth Proportional to 2,474.34, 3,709.76 and 1,240.88

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Solution

The fourth proportional to 2,474.34, 3,709.76 and 1,240.88 is: 1,860.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,474.34 : 3,709.76 = 1,240.88 : x
  2. Step 2: Convert to fraction form
    2,474.34/3,709.76 = 1,240.88/x
  3. Step 3: Cross multiply
    2,474.34x = 3,709.76 × 1,240.88
  4. Step 4: Simplify right side
    2,474.34x = 4,603,366.99
  5. Step 5: Solve for x
    x = 4,603,366.99/2,474.34
  6. Step 6: Final answer
    x = 1,860.44

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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.