Home / 8,910.36-13,361.04-5,213.70

Finding the Fourth Proportional to 8,910.36, 13,361.04 and 5,213.70

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Solution

The fourth proportional to 8,910.36, 13,361.04 and 5,213.70 is: 7,817.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,910.36 : 13,361.04 = 5,213.70 : x
  2. Step 2: Convert to fraction form
    8,910.36/13,361.04 = 5,213.70/x
  3. Step 3: Cross multiply
    8,910.36x = 13,361.04 × 5,213.70
  4. Step 4: Simplify right side
    8,910.36x = 69,660,454.25
  5. Step 5: Solve for x
    x = 69,660,454.25/8,910.36
  6. Step 6: Final answer
    x = 7,817.92

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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.