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Finding the Fourth Proportional to 1,414.92, 1,950.84 and 1,021.80

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Solution

The fourth proportional to 1,414.92, 1,950.84 and 1,021.80 is: 1,408.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,414.92 : 1,950.84 = 1,021.80 : x
  2. Step 2: Convert to fraction form
    1,414.92/1,950.84 = 1,021.80/x
  3. Step 3: Cross multiply
    1,414.92x = 1,950.84 × 1,021.80
  4. Step 4: Simplify right side
    1,414.92x = 1,993,368.31
  5. Step 5: Solve for x
    x = 1,993,368.31/1,414.92
  6. Step 6: Final answer
    x = 1,408.82

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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.