Home / 7,819.48-10,786.20-4,987.33

Finding the Fourth Proportional to 7,819.48, 10,786.20 and 4,987.33

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Solution

The fourth proportional to 7,819.48, 10,786.20 and 4,987.33 is: 6,879.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,819.48 : 10,786.20 = 4,987.33 : x
  2. Step 2: Convert to fraction form
    7,819.48/10,786.20 = 4,987.33/x
  3. Step 3: Cross multiply
    7,819.48x = 10,786.20 × 4,987.33
  4. Step 4: Simplify right side
    7,819.48x = 53,794,338.85
  5. Step 5: Solve for x
    x = 53,794,338.85/7,819.48
  6. Step 6: Final answer
    x = 6,879.53

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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.