Home / 1,679.74-2,318.97-1,285.54

Finding the Fourth Proportional to 1,679.74, 2,318.97 and 1,285.54

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Solution

The fourth proportional to 1,679.74, 2,318.97 and 1,285.54 is: 1,774.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,679.74 : 2,318.97 = 1,285.54 : x
  2. Step 2: Convert to fraction form
    1,679.74/2,318.97 = 1,285.54/x
  3. Step 3: Cross multiply
    1,679.74x = 2,318.97 × 1,285.54
  4. Step 4: Simplify right side
    1,679.74x = 2,981,128.69
  5. Step 5: Solve for x
    x = 2,981,128.69/1,679.74
  6. Step 6: Final answer
    x = 1,774.76

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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.