Home / 2,119.79-3,175.59-1,192.53

Finding the Fourth Proportional to 2,119.79, 3,175.59 and 1,192.53

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Solution

The fourth proportional to 2,119.79, 3,175.59 and 1,192.53 is: 1,786.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,119.79 : 3,175.59 = 1,192.53 : x
  2. Step 2: Convert to fraction form
    2,119.79/3,175.59 = 1,192.53/x
  3. Step 3: Cross multiply
    2,119.79x = 3,175.59 × 1,192.53
  4. Step 4: Simplify right side
    2,119.79x = 3,786,980.38
  5. Step 5: Solve for x
    x = 3,786,980.38/2,119.79
  6. Step 6: Final answer
    x = 1,786.49

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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.