Home / 2,999.32-4,137.75-1,804.78

Finding the Fourth Proportional to 2,999.32, 4,137.75 and 1,804.78

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Solution

The fourth proportional to 2,999.32, 4,137.75 and 1,804.78 is: 2,489.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,999.32 : 4,137.75 = 1,804.78 : x
  2. Step 2: Convert to fraction form
    2,999.32/4,137.75 = 1,804.78/x
  3. Step 3: Cross multiply
    2,999.32x = 4,137.75 × 1,804.78
  4. Step 4: Simplify right side
    2,999.32x = 7,467,728.45
  5. Step 5: Solve for x
    x = 7,467,728.45/2,999.32
  6. Step 6: Final answer
    x = 2,489.81

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1.5x scale

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.