Home / 1,611.14-2,222.36-981.22

Finding the Fourth Proportional to 1,611.14, 2,222.36 and 981.22

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Solution

The fourth proportional to 1,611.14, 2,222.36 and 981.22 is: 1,353.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,611.14 : 2,222.36 = 981.22 : x
  2. Step 2: Convert to fraction form
    1,611.14/2,222.36 = 981.22/x
  3. Step 3: Cross multiply
    1,611.14x = 2,222.36 × 981.22
  4. Step 4: Simplify right side
    1,611.14x = 2,180,624.08
  5. Step 5: Solve for x
    x = 2,180,624.08/1,611.14
  6. Step 6: Final answer
    x = 1,353.47

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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.