Home / 1,791.36-2,688.53-914.51

Finding the Fourth Proportional to 1,791.36, 2,688.53 and 914.51

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Solution

The fourth proportional to 1,791.36, 2,688.53 and 914.51 is: 1,372.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,791.36 : 2,688.53 = 914.51 : x
  2. Step 2: Convert to fraction form
    1,791.36/2,688.53 = 914.51/x
  3. Step 3: Cross multiply
    1,791.36x = 2,688.53 × 914.51
  4. Step 4: Simplify right side
    1,791.36x = 2,458,689.72
  5. Step 5: Solve for x
    x = 2,458,689.72/1,791.36
  6. Step 6: Final answer
    x = 1,372.53

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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.