Home / 2,945.75-4,420.65-1,214.38

Finding the Fourth Proportional to 2,945.75, 4,420.65 and 1,214.38

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Solution

The fourth proportional to 2,945.75, 4,420.65 and 1,214.38 is: 1,822.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,945.75 : 4,420.65 = 1,214.38 : x
  2. Step 2: Convert to fraction form
    2,945.75/4,420.65 = 1,214.38/x
  3. Step 3: Cross multiply
    2,945.75x = 4,420.65 × 1,214.38
  4. Step 4: Simplify right side
    2,945.75x = 5,368,348.95
  5. Step 5: Solve for x
    x = 5,368,348.95/2,945.75
  6. Step 6: Final answer
    x = 1,822.40

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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.