Home / 1,905.68-2,629.65-1,109.11

Finding the Fourth Proportional to 1,905.68, 2,629.65 and 1,109.11

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Solution

The fourth proportional to 1,905.68, 2,629.65 and 1,109.11 is: 1,530.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,905.68 : 2,629.65 = 1,109.11 : x
  2. Step 2: Convert to fraction form
    1,905.68/2,629.65 = 1,109.11/x
  3. Step 3: Cross multiply
    1,905.68x = 2,629.65 × 1,109.11
  4. Step 4: Simplify right side
    1,905.68x = 2,916,563.54
  5. Step 5: Solve for x
    x = 2,916,563.54/1,905.68
  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.