Home / 1,996.65-2,755.40-1,112.51

Finding the Fourth Proportional to 1,996.65, 2,755.40 and 1,112.51

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Solution

The fourth proportional to 1,996.65, 2,755.40 and 1,112.51 is: 1,535.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,996.65 : 2,755.40 = 1,112.51 : x
  2. Step 2: Convert to fraction form
    1,996.65/2,755.40 = 1,112.51/x
  3. Step 3: Cross multiply
    1,996.65x = 2,755.40 × 1,112.51
  4. Step 4: Simplify right side
    1,996.65x = 3,065,390.71
  5. Step 5: Solve for x
    x = 3,065,390.71/1,996.65
  6. Step 6: Final answer
    x = 1,535.27

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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.