Home / 2,190.09-3,285.96-1,313.22

Finding the Fourth Proportional to 2,190.09, 3,285.96 and 1,313.22

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Solution

The fourth proportional to 2,190.09, 3,285.96 and 1,313.22 is: 1,970.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,190.09 : 3,285.96 = 1,313.22 : x
  2. Step 2: Convert to fraction form
    2,190.09/3,285.96 = 1,313.22/x
  3. Step 3: Cross multiply
    2,190.09x = 3,285.96 × 1,313.22
  4. Step 4: Simplify right side
    2,190.09x = 4,315,188.39
  5. Step 5: Solve for x
    x = 4,315,188.39/2,190.09
  6. Step 6: Final answer
    x = 1,970.32

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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.