Home / 1,282.05-1,757.69-1,258.70

Finding the Fourth Proportional to 1,282.05, 1,757.69 and 1,258.70

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Solution

The fourth proportional to 1,282.05, 1,757.69 and 1,258.70 is: 1,725.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,282.05 : 1,757.69 = 1,258.70 : x
  2. Step 2: Convert to fraction form
    1,282.05/1,757.69 = 1,258.70/x
  3. Step 3: Cross multiply
    1,282.05x = 1,757.69 × 1,258.70
  4. Step 4: Simplify right side
    1,282.05x = 2,212,394.04
  5. Step 5: Solve for x
    x = 2,212,394.04/1,282.05
  6. Step 6: Final answer
    x = 1,725.67

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.