Home / 8,920.36-13,380.67-4,240.85

Finding the Fourth Proportional to 8,920.36, 13,380.67 and 4,240.85

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Solution

The fourth proportional to 8,920.36, 13,380.67 and 4,240.85 is: 6,361.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,920.36 : 13,380.67 = 4,240.85 : x
  2. Step 2: Convert to fraction form
    8,920.36/13,380.67 = 4,240.85/x
  3. Step 3: Cross multiply
    8,920.36x = 13,380.67 × 4,240.85
  4. Step 4: Simplify right side
    8,920.36x = 56,745,414.37
  5. Step 5: Solve for x
    x = 56,745,414.37/8,920.36
  6. Step 6: Final answer
    x = 6,361.34

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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.