Home / 8,075.26-11,149.30-7,221.86

Finding the Fourth Proportional to 8,075.26, 11,149.30 and 7,221.86

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Solution

The fourth proportional to 8,075.26, 11,149.30 and 7,221.86 is: 9,971.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,075.26 : 11,149.30 = 7,221.86 : x
  2. Step 2: Convert to fraction form
    8,075.26/11,149.30 = 7,221.86/x
  3. Step 3: Cross multiply
    8,075.26x = 11,149.30 × 7,221.86
  4. Step 4: Simplify right side
    8,075.26x = 80,518,683.70
  5. Step 5: Solve for x
    x = 80,518,683.70/8,075.26
  6. Step 6: Final answer
    x = 9,971.03

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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.