Home / 3,415.09-5,114.40-1,949.80

Finding the Fourth Proportional to 3,415.09, 5,114.40 and 1,949.80

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Solution

The fourth proportional to 3,415.09, 5,114.40 and 1,949.80 is: 2,920.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,415.09 : 5,114.40 = 1,949.80 : x
  2. Step 2: Convert to fraction form
    3,415.09/5,114.40 = 1,949.80/x
  3. Step 3: Cross multiply
    3,415.09x = 5,114.40 × 1,949.80
  4. Step 4: Simplify right side
    3,415.09x = 9,972,057.12
  5. Step 5: Solve for x
    x = 9,972,057.12/3,415.09
  6. Step 6: Final answer
    x = 2,920.00

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1.5x scale

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.