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Finding the Fourth Proportional to 7,223.59, 9,930.27 and 6,211.59

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Solution

The fourth proportional to 7,223.59, 9,930.27 and 6,211.59 is: 8,539.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,223.59 : 9,930.27 = 6,211.59 : x
  2. Step 2: Convert to fraction form
    7,223.59/9,930.27 = 6,211.59/x
  3. Step 3: Cross multiply
    7,223.59x = 9,930.27 × 6,211.59
  4. Step 4: Simplify right side
    7,223.59x = 61,682,751.88
  5. Step 5: Solve for x
    x = 61,682,751.88/7,223.59
  6. Step 6: Final answer
    x = 8,539.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.