Home / 1,989.27-2,739.62-1,946.22

Finding the Fourth Proportional to 1,989.27, 2,739.62 and 1,946.22

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Solution

The fourth proportional to 1,989.27, 2,739.62 and 1,946.22 is: 2,680.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,989.27 : 2,739.62 = 1,946.22 : x
  2. Step 2: Convert to fraction form
    1,989.27/2,739.62 = 1,946.22/x
  3. Step 3: Cross multiply
    1,989.27x = 2,739.62 × 1,946.22
  4. Step 4: Simplify right side
    1,989.27x = 5,331,893.51
  5. Step 5: Solve for x
    x = 5,331,893.51/1,989.27
  6. Step 6: Final answer
    x = 2,680.33

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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.