Home / 1,639.33-2,263.14-1,274.72

Finding the Fourth Proportional to 1,639.33, 2,263.14 and 1,274.72

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Solution

The fourth proportional to 1,639.33, 2,263.14 and 1,274.72 is: 1,759.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,639.33 : 2,263.14 = 1,274.72 : x
  2. Step 2: Convert to fraction form
    1,639.33/2,263.14 = 1,274.72/x
  3. Step 3: Cross multiply
    1,639.33x = 2,263.14 × 1,274.72
  4. Step 4: Simplify right side
    1,639.33x = 2,884,868.55
  5. Step 5: Solve for x
    x = 2,884,868.55/1,639.33
  6. Step 6: Final answer
    x = 1,759.78

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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.