Home / 1,760.51-2,639.70-1,212.09

Finding the Fourth Proportional to 1,760.51, 2,639.70 and 1,212.09

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Solution

The fourth proportional to 1,760.51, 2,639.70 and 1,212.09 is: 1,817.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,760.51 : 2,639.70 = 1,212.09 : x
  2. Step 2: Convert to fraction form
    1,760.51/2,639.70 = 1,212.09/x
  3. Step 3: Cross multiply
    1,760.51x = 2,639.70 × 1,212.09
  4. Step 4: Simplify right side
    1,760.51x = 3,199,544.07
  5. Step 5: Solve for x
    x = 3,199,544.07/1,760.51
  6. Step 6: Final answer
    x = 1,817.39

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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.