Home / 1,989.49-2,743.66-1,352.39

Finding the Fourth Proportional to 1,989.49, 2,743.66 and 1,352.39

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Solution

The fourth proportional to 1,989.49, 2,743.66 and 1,352.39 is: 1,865.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,989.49 : 2,743.66 = 1,352.39 : x
  2. Step 2: Convert to fraction form
    1,989.49/2,743.66 = 1,352.39/x
  3. Step 3: Cross multiply
    1,989.49x = 2,743.66 × 1,352.39
  4. Step 4: Simplify right side
    1,989.49x = 3,710,481.25
  5. Step 5: Solve for x
    x = 3,710,481.25/1,989.49
  6. Step 6: Final answer
    x = 1,865.04

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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.