Home / 2,820.66-4,223.69-1,945.86

Finding the Fourth Proportional to 2,820.66, 4,223.69 and 1,945.86

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Solution

The fourth proportional to 2,820.66, 4,223.69 and 1,945.86 is: 2,913.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,820.66 : 4,223.69 = 1,945.86 : x
  2. Step 2: Convert to fraction form
    2,820.66/4,223.69 = 1,945.86/x
  3. Step 3: Cross multiply
    2,820.66x = 4,223.69 × 1,945.86
  4. Step 4: Simplify right side
    2,820.66x = 8,218,709.42
  5. Step 5: Solve for x
    x = 8,218,709.42/2,820.66
  6. Step 6: Final answer
    x = 2,913.75

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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.