Home / 2,185.16-3,015.51-1,190.45

Finding the Fourth Proportional to 2,185.16, 3,015.51 and 1,190.45

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Solution

The fourth proportional to 2,185.16, 3,015.51 and 1,190.45 is: 1,642.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,185.16 : 3,015.51 = 1,190.45 : x
  2. Step 2: Convert to fraction form
    2,185.16/3,015.51 = 1,190.45/x
  3. Step 3: Cross multiply
    2,185.16x = 3,015.51 × 1,190.45
  4. Step 4: Simplify right side
    2,185.16x = 3,589,813.88
  5. Step 5: Solve for x
    x = 3,589,813.88/2,185.16
  6. Step 6: Final answer
    x = 1,642.82

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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.