Home / 1,980.18-2,733.08-1,194.21

Finding the Fourth Proportional to 1,980.18, 2,733.08 and 1,194.21

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Solution

The fourth proportional to 1,980.18, 2,733.08 and 1,194.21 is: 1,648.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,980.18 : 2,733.08 = 1,194.21 : x
  2. Step 2: Convert to fraction form
    1,980.18/2,733.08 = 1,194.21/x
  3. Step 3: Cross multiply
    1,980.18x = 2,733.08 × 1,194.21
  4. Step 4: Simplify right side
    1,980.18x = 3,263,865.50
  5. Step 5: Solve for x
    x = 3,263,865.50/1,980.18
  6. Step 6: Final answer
    x = 1,648.27

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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.