Home / 2,784.21-3,842.13-1,664.58

Finding the Fourth Proportional to 2,784.21, 3,842.13 and 1,664.58

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Solution

The fourth proportional to 2,784.21, 3,842.13 and 1,664.58 is: 2,297.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,784.21 : 3,842.13 = 1,664.58 : x
  2. Step 2: Convert to fraction form
    2,784.21/3,842.13 = 1,664.58/x
  3. Step 3: Cross multiply
    2,784.21x = 3,842.13 × 1,664.58
  4. Step 4: Simplify right side
    2,784.21x = 6,395,553.41
  5. Step 5: Solve for x
    x = 6,395,553.41/2,784.21
  6. Step 6: Final answer
    x = 2,297.08

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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.