Home / 1,928.21-2,659.64-1,338.32

Finding the Fourth Proportional to 1,928.21, 2,659.64 and 1,338.32

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Solution

The fourth proportional to 1,928.21, 2,659.64 and 1,338.32 is: 1,845.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,928.21 : 2,659.64 = 1,338.32 : x
  2. Step 2: Convert to fraction form
    1,928.21/2,659.64 = 1,338.32/x
  3. Step 3: Cross multiply
    1,928.21x = 2,659.64 × 1,338.32
  4. Step 4: Simplify right side
    1,928.21x = 3,559,449.36
  5. Step 5: Solve for x
    x = 3,559,449.36/1,928.21
  6. Step 6: Final answer
    x = 1,845.99

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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.