Home / 1,980.10-2,733.10-1,194.20

Finding the Fourth Proportional to 1,980.10, 2,733.10 and 1,194.20

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Solution

The fourth proportional to 1,980.10, 2,733.10 and 1,194.20 is: 1,648.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,980.10 : 2,733.10 = 1,194.20 : x
  2. Step 2: Convert to fraction form
    1,980.10/2,733.10 = 1,194.20/x
  3. Step 3: Cross multiply
    1,980.10x = 2,733.10 × 1,194.20
  4. Step 4: Simplify right side
    1,980.10x = 3,263,868.02
  5. Step 5: Solve for x
    x = 3,263,868.02/1,980.10
  6. Step 6: Final answer
    x = 1,648.33

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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.