Home / 1,990.49-2,965.97-1,772.39

Finding the Fourth Proportional to 1,990.49, 2,965.97 and 1,772.39

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Solution

The fourth proportional to 1,990.49, 2,965.97 and 1,772.39 is: 2,641.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,990.49 : 2,965.97 = 1,772.39 : x
  2. Step 2: Convert to fraction form
    1,990.49/2,965.97 = 1,772.39/x
  3. Step 3: Cross multiply
    1,990.49x = 2,965.97 × 1,772.39
  4. Step 4: Simplify right side
    1,990.49x = 5,256,867.41
  5. Step 5: Solve for x
    x = 5,256,867.41/1,990.49
  6. Step 6: Final answer
    x = 2,641.00

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.