Home / 7,847.50-11,771.26-2,653.78

Finding the Fourth Proportional to 7,847.50, 11,771.26 and 2,653.78

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Solution

The fourth proportional to 7,847.50, 11,771.26 and 2,653.78 is: 3,980.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,847.50 : 11,771.26 = 2,653.78 : x
  2. Step 2: Convert to fraction form
    7,847.50/11,771.26 = 2,653.78/x
  3. Step 3: Cross multiply
    7,847.50x = 11,771.26 × 2,653.78
  4. Step 4: Simplify right side
    7,847.50x = 31,238,334.36
  5. Step 5: Solve for x
    x = 31,238,334.36/7,847.50
  6. Step 6: Final answer
    x = 3,980.67

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1.5x scale

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.