Home / 1,954.39-2,697.08-1,395.80

Finding the Fourth Proportional to 1,954.39, 2,697.08 and 1,395.80

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Solution

The fourth proportional to 1,954.39, 2,697.08 and 1,395.80 is: 1,926.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,954.39 : 2,697.08 = 1,395.80 : x
  2. Step 2: Convert to fraction form
    1,954.39/2,697.08 = 1,395.80/x
  3. Step 3: Cross multiply
    1,954.39x = 2,697.08 × 1,395.80
  4. Step 4: Simplify right side
    1,954.39x = 3,764,584.26
  5. Step 5: Solve for x
    x = 3,764,584.26/1,954.39
  6. Step 6: Final answer
    x = 1,926.22

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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.