Home / 2,821.06-3,893.70-1,642.42

Finding the Fourth Proportional to 2,821.06, 3,893.70 and 1,642.42

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Solution

The fourth proportional to 2,821.06, 3,893.70 and 1,642.42 is: 2,266.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,821.06 : 3,893.70 = 1,642.42 : x
  2. Step 2: Convert to fraction form
    2,821.06/3,893.70 = 1,642.42/x
  3. Step 3: Cross multiply
    2,821.06x = 3,893.70 × 1,642.42
  4. Step 4: Simplify right side
    2,821.06x = 6,395,090.75
  5. Step 5: Solve for x
    x = 6,395,090.75/2,821.06
  6. Step 6: Final answer
    x = 2,266.91

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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.