Home / 1,911.57-2,637.37-1,204.12

Finding the Fourth Proportional to 1,911.57, 2,637.37 and 1,204.12

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Solution

The fourth proportional to 1,911.57, 2,637.37 and 1,204.12 is: 1,661.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,911.57 : 2,637.37 = 1,204.12 : x
  2. Step 2: Convert to fraction form
    1,911.57/2,637.37 = 1,204.12/x
  3. Step 3: Cross multiply
    1,911.57x = 2,637.37 × 1,204.12
  4. Step 4: Simplify right side
    1,911.57x = 3,175,709.96
  5. Step 5: Solve for x
    x = 3,175,709.96/1,911.57
  6. Step 6: Final answer
    x = 1,661.31

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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.