Home / 1,284.94-1,921.92-1,072.58

Finding the Fourth Proportional to 1,284.94, 1,921.92 and 1,072.58

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Solution

The fourth proportional to 1,284.94, 1,921.92 and 1,072.58 is: 1,604.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,284.94 : 1,921.92 = 1,072.58 : x
  2. Step 2: Convert to fraction form
    1,284.94/1,921.92 = 1,072.58/x
  3. Step 3: Cross multiply
    1,284.94x = 1,921.92 × 1,072.58
  4. Step 4: Simplify right side
    1,284.94x = 2,061,402.34
  5. Step 5: Solve for x
    x = 2,061,402.34/1,284.94
  6. Step 6: Final answer
    x = 1,604.28

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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.