Home / 2,222.16-3,334.53-989.70

Finding the Fourth Proportional to 2,222.16, 3,334.53 and 989.70

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Solution

The fourth proportional to 2,222.16, 3,334.53 and 989.70 is: 1,485.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,222.16 : 3,334.53 = 989.70 : x
  2. Step 2: Convert to fraction form
    2,222.16/3,334.53 = 989.70/x
  3. Step 3: Cross multiply
    2,222.16x = 3,334.53 × 989.70
  4. Step 4: Simplify right side
    2,222.16x = 3,300,184.34
  5. Step 5: Solve for x
    x = 3,300,184.34/2,222.16
  6. Step 6: Final answer
    x = 1,485.12

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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.