Home / 1,270.10-1,749.39-1,262.54

Finding the Fourth Proportional to 1,270.10, 1,749.39 and 1,262.54

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Solution

The fourth proportional to 1,270.10, 1,749.39 and 1,262.54 is: 1,738.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,270.10 : 1,749.39 = 1,262.54 : x
  2. Step 2: Convert to fraction form
    1,270.10/1,749.39 = 1,262.54/x
  3. Step 3: Cross multiply
    1,270.10x = 1,749.39 × 1,262.54
  4. Step 4: Simplify right side
    1,270.10x = 2,208,674.85
  5. Step 5: Solve for x
    x = 2,208,674.85/1,270.10
  6. Step 6: Final answer
    x = 1,738.98

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1.5x scale

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.