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Finding the Fourth Proportional to 2,435.52, 3,361.12 and 1,387.84

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Solution

The fourth proportional to 2,435.52, 3,361.12 and 1,387.84 is: 1,915.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,435.52 : 3,361.12 = 1,387.84 : x
  2. Step 2: Convert to fraction form
    2,435.52/3,361.12 = 1,387.84/x
  3. Step 3: Cross multiply
    2,435.52x = 3,361.12 × 1,387.84
  4. Step 4: Simplify right side
    2,435.52x = 4,664,696.78
  5. Step 5: Solve for x
    x = 4,664,696.78/2,435.52
  6. Step 6: Final answer
    x = 1,915.28

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.