Home / 3,309.90-4,967.24-1,921.38

Finding the Fourth Proportional to 3,309.90, 4,967.24 and 1,921.38

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Solution

The fourth proportional to 3,309.90, 4,967.24 and 1,921.38 is: 2,883.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,309.90 : 4,967.24 = 1,921.38 : x
  2. Step 2: Convert to fraction form
    3,309.90/4,967.24 = 1,921.38/x
  3. Step 3: Cross multiply
    3,309.90x = 4,967.24 × 1,921.38
  4. Step 4: Simplify right side
    3,309.90x = 9,543,955.59
  5. Step 5: Solve for x
    x = 9,543,955.59/3,309.90
  6. Step 6: Final answer
    x = 2,883.46

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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.