Home / 3,005.09-4,145.30-1,809.25

Finding the Fourth Proportional to 3,005.09, 4,145.30 and 1,809.25

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Solution

The fourth proportional to 3,005.09, 4,145.30 and 1,809.25 is: 2,495.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,005.09 : 4,145.30 = 1,809.25 : x
  2. Step 2: Convert to fraction form
    3,005.09/4,145.30 = 1,809.25/x
  3. Step 3: Cross multiply
    3,005.09x = 4,145.30 × 1,809.25
  4. Step 4: Simplify right side
    3,005.09x = 7,499,884.03
  5. Step 5: Solve for x
    x = 7,499,884.03/3,005.09
  6. Step 6: Final answer
    x = 2,495.73

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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.