Home / 2,010.40-3,015.62-1,321.44

Finding the Fourth Proportional to 2,010.40, 3,015.62 and 1,321.44

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Solution

The fourth proportional to 2,010.40, 3,015.62 and 1,321.44 is: 1,982.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,010.40 : 3,015.62 = 1,321.44 : x
  2. Step 2: Convert to fraction form
    2,010.40/3,015.62 = 1,321.44/x
  3. Step 3: Cross multiply
    2,010.40x = 3,015.62 × 1,321.44
  4. Step 4: Simplify right side
    2,010.40x = 3,984,960.89
  5. Step 5: Solve for x
    x = 3,984,960.89/2,010.40
  6. Step 6: Final answer
    x = 1,982.17

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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.