Home / 2,984.22-4,119.72-1,865.78

Finding the Fourth Proportional to 2,984.22, 4,119.72 and 1,865.78

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Solution

The fourth proportional to 2,984.22, 4,119.72 and 1,865.78 is: 2,575.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,984.22 : 4,119.72 = 1,865.78 : x
  2. Step 2: Convert to fraction form
    2,984.22/4,119.72 = 1,865.78/x
  3. Step 3: Cross multiply
    2,984.22x = 4,119.72 × 1,865.78
  4. Step 4: Simplify right side
    2,984.22x = 7,686,491.18
  5. Step 5: Solve for x
    x = 7,686,491.18/2,984.22
  6. Step 6: Final answer
    x = 2,575.71

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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.