Home / 1,449.44-1,998.75-1,240.31

Finding the Fourth Proportional to 1,449.44, 1,998.75 and 1,240.31

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Solution

The fourth proportional to 1,449.44, 1,998.75 and 1,240.31 is: 1,710.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,449.44 : 1,998.75 = 1,240.31 : x
  2. Step 2: Convert to fraction form
    1,449.44/1,998.75 = 1,240.31/x
  3. Step 3: Cross multiply
    1,449.44x = 1,998.75 × 1,240.31
  4. Step 4: Simplify right side
    1,449.44x = 2,479,059.62
  5. Step 5: Solve for x
    x = 2,479,059.62/1,449.44
  6. Step 6: Final answer
    x = 1,710.36

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1.5x scale

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.