Home / 1,288.96-1,931.94-1,093.36

Finding the Fourth Proportional to 1,288.96, 1,931.94 and 1,093.36

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Solution

The fourth proportional to 1,288.96, 1,931.94 and 1,093.36 is: 1,638.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,288.96 : 1,931.94 = 1,093.36 : x
  2. Step 2: Convert to fraction form
    1,288.96/1,931.94 = 1,093.36/x
  3. Step 3: Cross multiply
    1,288.96x = 1,931.94 × 1,093.36
  4. Step 4: Simplify right side
    1,288.96x = 2,112,305.92
  5. Step 5: Solve for x
    x = 2,112,305.92/1,288.96
  6. Step 6: Final answer
    x = 1,638.77

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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.