Home / 7,211.16-10,812.96-3,311.28

Finding the Fourth Proportional to 7,211.16, 10,812.96 and 3,311.28

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Solution

The fourth proportional to 7,211.16, 10,812.96 and 3,311.28 is: 4,965.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,211.16 : 10,812.96 = 3,311.28 : x
  2. Step 2: Convert to fraction form
    7,211.16/10,812.96 = 3,311.28/x
  3. Step 3: Cross multiply
    7,211.16x = 10,812.96 × 3,311.28
  4. Step 4: Simplify right side
    7,211.16x = 35,804,738.19
  5. Step 5: Solve for x
    x = 35,804,738.19/7,211.16
  6. Step 6: Final answer
    x = 4,965.18

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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.