Home / 7,856.80-11,782.46-3,477.33

Finding the Fourth Proportional to 7,856.80, 11,782.46 and 3,477.33

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Solution

The fourth proportional to 7,856.80, 11,782.46 and 3,477.33 is: 5,214.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,856.80 : 11,782.46 = 3,477.33 : x
  2. Step 2: Convert to fraction form
    7,856.80/11,782.46 = 3,477.33/x
  3. Step 3: Cross multiply
    7,856.80x = 11,782.46 × 3,477.33
  4. Step 4: Simplify right side
    7,856.80x = 40,971,510.33
  5. Step 5: Solve for x
    x = 40,971,510.33/7,856.80
  6. Step 6: Final answer
    x = 5,214.79

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.