Home / 2,945.70-4,415.31-1,213.38

Finding the Fourth Proportional to 2,945.70, 4,415.31 and 1,213.38

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Solution

The fourth proportional to 2,945.70, 4,415.31 and 1,213.38 is: 1,818.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,945.70 : 4,415.31 = 1,213.38 : x
  2. Step 2: Convert to fraction form
    2,945.70/4,415.31 = 1,213.38/x
  3. Step 3: Cross multiply
    2,945.70x = 4,415.31 × 1,213.38
  4. Step 4: Simplify right side
    2,945.70x = 5,357,448.85
  5. Step 5: Solve for x
    x = 5,357,448.85/2,945.70
  6. Step 6: Final answer
    x = 1,818.74

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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.