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Finding the Fourth Proportional to 2,142.94, 3,214.42 and 582.95

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Solution

The fourth proportional to 2,142.94, 3,214.42 and 582.95 is: 874.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,142.94 : 3,214.42 = 582.95 : x
  2. Step 2: Convert to fraction form
    2,142.94/3,214.42 = 582.95/x
  3. Step 3: Cross multiply
    2,142.94x = 3,214.42 × 582.95
  4. Step 4: Simplify right side
    2,142.94x = 1,873,846.14
  5. Step 5: Solve for x
    x = 1,873,846.14/2,142.94
  6. Step 6: Final answer
    x = 874.43

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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.