Home / 2,784.21-3,840.82-1,664.85

Finding the Fourth Proportional to 2,784.21, 3,840.82 and 1,664.85

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Solution

The fourth proportional to 2,784.21, 3,840.82 and 1,664.85 is: 2,296.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,784.21 : 3,840.82 = 1,664.85 : x
  2. Step 2: Convert to fraction form
    2,784.21/3,840.82 = 1,664.85/x
  3. Step 3: Cross multiply
    2,784.21x = 3,840.82 × 1,664.85
  4. Step 4: Simplify right side
    2,784.21x = 6,394,389.18
  5. Step 5: Solve for x
    x = 6,394,389.18/2,784.21
  6. Step 6: Final answer
    x = 2,296.66

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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.