Home / 4,976.40-6,866.16-2,879.28

Finding the Fourth Proportional to 4,976.40, 6,866.16 and 2,879.28

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Solution

The fourth proportional to 4,976.40, 6,866.16 and 2,879.28 is: 3,972.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,976.40 : 6,866.16 = 2,879.28 : x
  2. Step 2: Convert to fraction form
    4,976.40/6,866.16 = 2,879.28/x
  3. Step 3: Cross multiply
    4,976.40x = 6,866.16 × 2,879.28
  4. Step 4: Simplify right side
    4,976.40x = 19,769,597.16
  5. Step 5: Solve for x
    x = 19,769,597.16/4,976.40
  6. Step 6: Final answer
    x = 3,972.67

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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.