Home / 1,664.41-2,297.76-1,290.55

Finding the Fourth Proportional to 1,664.41, 2,297.76 and 1,290.55

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Solution

The fourth proportional to 1,664.41, 2,297.76 and 1,290.55 is: 1,781.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,664.41 : 2,297.76 = 1,290.55 : x
  2. Step 2: Convert to fraction form
    1,664.41/2,297.76 = 1,290.55/x
  3. Step 3: Cross multiply
    1,664.41x = 2,297.76 × 1,290.55
  4. Step 4: Simplify right side
    1,664.41x = 2,965,362.68
  5. Step 5: Solve for x
    x = 2,965,362.68/1,664.41
  6. Step 6: Final answer
    x = 1,781.64

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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.