Home / 2,891.49-3,990.31-1,697.33

Finding the Fourth Proportional to 2,891.49, 3,990.31 and 1,697.33

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Solution

The fourth proportional to 2,891.49, 3,990.31 and 1,697.33 is: 2,342.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,891.49 : 3,990.31 = 1,697.33 : x
  2. Step 2: Convert to fraction form
    2,891.49/3,990.31 = 1,697.33/x
  3. Step 3: Cross multiply
    2,891.49x = 3,990.31 × 1,697.33
  4. Step 4: Simplify right side
    2,891.49x = 6,772,887.09
  5. Step 5: Solve for x
    x = 6,772,887.09/2,891.49
  6. Step 6: Final answer
    x = 2,342.35

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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.