Home / 7,110.06-9,811.65-3,879.75

Finding the Fourth Proportional to 7,110.06, 9,811.65 and 3,879.75

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Solution

The fourth proportional to 7,110.06, 9,811.65 and 3,879.75 is: 5,353.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,110.06 : 9,811.65 = 3,879.75 : x
  2. Step 2: Convert to fraction form
    7,110.06/9,811.65 = 3,879.75/x
  3. Step 3: Cross multiply
    7,110.06x = 9,811.65 × 3,879.75
  4. Step 4: Simplify right side
    7,110.06x = 38,066,749.09
  5. Step 5: Solve for x
    x = 38,066,749.09/7,110.06
  6. Step 6: Final answer
    x = 5,353.93

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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.