Home / 1,989.09-2,743.56-1,616.07

Finding the Fourth Proportional to 1,989.09, 2,743.56 and 1,616.07

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Solution

The fourth proportional to 1,989.09, 2,743.56 and 1,616.07 is: 2,229.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,989.09 : 2,743.56 = 1,616.07 : x
  2. Step 2: Convert to fraction form
    1,989.09/2,743.56 = 1,616.07/x
  3. Step 3: Cross multiply
    1,989.09x = 2,743.56 × 1,616.07
  4. Step 4: Simplify right side
    1,989.09x = 4,433,785.01
  5. Step 5: Solve for x
    x = 4,433,785.01/1,989.09
  6. Step 6: Final answer
    x = 2,229.05

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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.