Home / 7,481.63-11,211.81-3,320.25

Finding the Fourth Proportional to 7,481.63, 11,211.81 and 3,320.25

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Solution

The fourth proportional to 7,481.63, 11,211.81 and 3,320.25 is: 4,975.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,481.63 : 11,211.81 = 3,320.25 : x
  2. Step 2: Convert to fraction form
    7,481.63/11,211.81 = 3,320.25/x
  3. Step 3: Cross multiply
    7,481.63x = 11,211.81 × 3,320.25
  4. Step 4: Simplify right side
    7,481.63x = 37,226,012.15
  5. Step 5: Solve for x
    x = 37,226,012.15/7,481.63
  6. Step 6: Final answer
    x = 4,975.66

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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.