Home / 2,329.30-3,213.48-1,489.78

Finding the Fourth Proportional to 2,329.30, 3,213.48 and 1,489.78

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Solution

The fourth proportional to 2,329.30, 3,213.48 and 1,489.78 is: 2,055.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,329.30 : 3,213.48 = 1,489.78 : x
  2. Step 2: Convert to fraction form
    2,329.30/3,213.48 = 1,489.78/x
  3. Step 3: Cross multiply
    2,329.30x = 3,213.48 × 1,489.78
  4. Step 4: Simplify right side
    2,329.30x = 4,787,378.23
  5. Step 5: Solve for x
    x = 4,787,378.23/2,329.30
  6. Step 6: Final answer
    x = 2,055.29

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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.