Home / 2,087.70-2,879.58-1,379.62

Finding the Fourth Proportional to 2,087.70, 2,879.58 and 1,379.62

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Solution

The fourth proportional to 2,087.70, 2,879.58 and 1,379.62 is: 1,902.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,087.70 : 2,879.58 = 1,379.62 : x
  2. Step 2: Convert to fraction form
    2,087.70/2,879.58 = 1,379.62/x
  3. Step 3: Cross multiply
    2,087.70x = 2,879.58 × 1,379.62
  4. Step 4: Simplify right side
    2,087.70x = 3,972,726.16
  5. Step 5: Solve for x
    x = 3,972,726.16/2,087.70
  6. Step 6: Final answer
    x = 1,902.92

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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.