Home / 1,905.65-2,629.82-1,109.02

Finding the Fourth Proportional to 1,905.65, 2,629.82 and 1,109.02

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Solution

The fourth proportional to 1,905.65, 2,629.82 and 1,109.02 is: 1,530.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,905.65 : 2,629.82 = 1,109.02 : x
  2. Step 2: Convert to fraction form
    1,905.65/2,629.82 = 1,109.02/x
  3. Step 3: Cross multiply
    1,905.65x = 2,629.82 × 1,109.02
  4. Step 4: Simplify right side
    1,905.65x = 2,916,522.98
  5. Step 5: Solve for x
    x = 2,916,522.98/1,905.65
  6. Step 6: Final answer
    x = 1,530.46

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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.