Home / 1,991.19-2,747.85-1,095

Finding the Fourth Proportional to 1,991.19, 2,747.85 and 1,095

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Solution

The fourth proportional to 1,991.19, 2,747.85 and 1,095 is: 1,511.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,991.19 : 2,747.85 = 1,095 : x
  2. Step 2: Convert to fraction form
    1,991.19/2,747.85 = 1,095/x
  3. Step 3: Cross multiply
    1,991.19x = 2,747.85 × 1,095
  4. Step 4: Simplify right side
    1,991.19x = 3,008,895.75
  5. Step 5: Solve for x
    x = 3,008,895.75/1,991.19
  6. Step 6: Final answer
    x = 1,511.10

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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.