Home / 6,422.27-8,859.41-4,065.78

Finding the Fourth Proportional to 6,422.27, 8,859.41 and 4,065.78

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Solution

The fourth proportional to 6,422.27, 8,859.41 and 4,065.78 is: 5,608.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,422.27 : 8,859.41 = 4,065.78 : x
  2. Step 2: Convert to fraction form
    6,422.27/8,859.41 = 4,065.78/x
  3. Step 3: Cross multiply
    6,422.27x = 8,859.41 × 4,065.78
  4. Step 4: Simplify right side
    6,422.27x = 36,020,391.66
  5. Step 5: Solve for x
    x = 36,020,391.66/6,422.27
  6. Step 6: Final answer
    x = 5,608.67

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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.