Home / 1,938.32-2,674.44-1,275.28

Finding the Fourth Proportional to 1,938.32, 2,674.44 and 1,275.28

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Solution

The fourth proportional to 1,938.32, 2,674.44 and 1,275.28 is: 1,759.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,938.32 : 2,674.44 = 1,275.28 : x
  2. Step 2: Convert to fraction form
    1,938.32/2,674.44 = 1,275.28/x
  3. Step 3: Cross multiply
    1,938.32x = 2,674.44 × 1,275.28
  4. Step 4: Simplify right side
    1,938.32x = 3,410,659.84
  5. Step 5: Solve for x
    x = 3,410,659.84/1,938.32
  6. Step 6: Final answer
    x = 1,759.60

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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.