Home / 1,290.96-1,934.94-1,095.36

Finding the Fourth Proportional to 1,290.96, 1,934.94 and 1,095.36

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Solution

The fourth proportional to 1,290.96, 1,934.94 and 1,095.36 is: 1,641.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,290.96 : 1,934.94 = 1,095.36 : x
  2. Step 2: Convert to fraction form
    1,290.96/1,934.94 = 1,095.36/x
  3. Step 3: Cross multiply
    1,290.96x = 1,934.94 × 1,095.36
  4. Step 4: Simplify right side
    1,290.96x = 2,119,455.88
  5. Step 5: Solve for x
    x = 2,119,455.88/1,290.96
  6. Step 6: Final answer
    x = 1,641.77

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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.