Home / 1,980.90-2,732.13-1,194.12

Finding the Fourth Proportional to 1,980.90, 2,732.13 and 1,194.12

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Solution

The fourth proportional to 1,980.90, 2,732.13 and 1,194.12 is: 1,646.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,980.90 : 2,732.13 = 1,194.12 : x
  2. Step 2: Convert to fraction form
    1,980.90/2,732.13 = 1,194.12/x
  3. Step 3: Cross multiply
    1,980.90x = 2,732.13 × 1,194.12
  4. Step 4: Simplify right side
    1,980.90x = 3,262,491.08
  5. Step 5: Solve for x
    x = 3,262,491.08/1,980.90
  6. Step 6: Final answer
    x = 1,646.97

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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.