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Finding the Fourth Proportional to 2,643.84, 3,968.10 and 1,474.74

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Solution

The fourth proportional to 2,643.84, 3,968.10 and 1,474.74 is: 2,213.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,643.84 : 3,968.10 = 1,474.74 : x
  2. Step 2: Convert to fraction form
    2,643.84/3,968.10 = 1,474.74/x
  3. Step 3: Cross multiply
    2,643.84x = 3,968.10 × 1,474.74
  4. Step 4: Simplify right side
    2,643.84x = 5,851,915.79
  5. Step 5: Solve for x
    x = 5,851,915.79/2,643.84
  6. Step 6: Final answer
    x = 2,213.42

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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.