Home / 2,087.06-2,879.85-1,190.92

Finding the Fourth Proportional to 2,087.06, 2,879.85 and 1,190.92

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Solution

The fourth proportional to 2,087.06, 2,879.85 and 1,190.92 is: 1,643.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,087.06 : 2,879.85 = 1,190.92 : x
  2. Step 2: Convert to fraction form
    2,087.06/2,879.85 = 1,190.92/x
  3. Step 3: Cross multiply
    2,087.06x = 2,879.85 × 1,190.92
  4. Step 4: Simplify right side
    2,087.06x = 3,429,668.23
  5. Step 5: Solve for x
    x = 3,429,668.23/2,087.06
  6. Step 6: Final answer
    x = 1,643.31

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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.