Home / 2,399.64-3,315.78-1,879.62

Finding the Fourth Proportional to 2,399.64, 3,315.78 and 1,879.62

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Solution

The fourth proportional to 2,399.64, 3,315.78 and 1,879.62 is: 2,597.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,399.64 : 3,315.78 = 1,879.62 : x
  2. Step 2: Convert to fraction form
    2,399.64/3,315.78 = 1,879.62/x
  3. Step 3: Cross multiply
    2,399.64x = 3,315.78 × 1,879.62
  4. Step 4: Simplify right side
    2,399.64x = 6,232,406.40
  5. Step 5: Solve for x
    x = 6,232,406.40/2,399.64
  6. Step 6: Final answer
    x = 2,597.23

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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.