Home / 1,988.53-2,743.37-1,149.07

Finding the Fourth Proportional to 1,988.53, 2,743.37 and 1,149.07

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Solution

The fourth proportional to 1,988.53, 2,743.37 and 1,149.07 is: 1,585.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,988.53 : 2,743.37 = 1,149.07 : x
  2. Step 2: Convert to fraction form
    1,988.53/2,743.37 = 1,149.07/x
  3. Step 3: Cross multiply
    1,988.53x = 2,743.37 × 1,149.07
  4. Step 4: Simplify right side
    1,988.53x = 3,152,321.01
  5. Step 5: Solve for x
    x = 3,152,321.01/1,988.53
  6. Step 6: Final answer
    x = 1,585.25

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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.