Home / 2,020.70-2,788.32-1,181.20

Finding the Fourth Proportional to 2,020.70, 2,788.32 and 1,181.20

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Solution

The fourth proportional to 2,020.70, 2,788.32 and 1,181.20 is: 1,629.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,020.70 : 2,788.32 = 1,181.20 : x
  2. Step 2: Convert to fraction form
    2,020.70/2,788.32 = 1,181.20/x
  3. Step 3: Cross multiply
    2,020.70x = 2,788.32 × 1,181.20
  4. Step 4: Simplify right side
    2,020.70x = 3,293,563.58
  5. Step 5: Solve for x
    x = 3,293,563.58/2,020.70
  6. Step 6: Final answer
    x = 1,629.91

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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.