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Finding the Fourth Proportional to 3,957.42, 5,934.41 and 1,878.02

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Solution

The fourth proportional to 3,957.42, 5,934.41 and 1,878.02 is: 2,816.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,957.42 : 5,934.41 = 1,878.02 : x
  2. Step 2: Convert to fraction form
    3,957.42/5,934.41 = 1,878.02/x
  3. Step 3: Cross multiply
    3,957.42x = 5,934.41 × 1,878.02
  4. Step 4: Simplify right side
    3,957.42x = 11,144,940.67
  5. Step 5: Solve for x
    x = 11,144,940.67/3,957.42
  6. Step 6: Final answer
    x = 2,816.21

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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.