Home / 1,953.12-2,930.70-979.22

Finding the Fourth Proportional to 1,953.12, 2,930.70 and 979.22

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Solution

The fourth proportional to 1,953.12, 2,930.70 and 979.22 is: 1,469.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,953.12 : 2,930.70 = 979.22 : x
  2. Step 2: Convert to fraction form
    1,953.12/2,930.70 = 979.22/x
  3. Step 3: Cross multiply
    1,953.12x = 2,930.70 × 979.22
  4. Step 4: Simplify right side
    1,953.12x = 2,869,800.05
  5. Step 5: Solve for x
    x = 2,869,800.05/1,953.12
  6. Step 6: Final answer
    x = 1,469.34

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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.