Home / 2,185.19-3,015.51-1,190.47

Finding the Fourth Proportional to 2,185.19, 3,015.51 and 1,190.47

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Solution

The fourth proportional to 2,185.19, 3,015.51 and 1,190.47 is: 1,642.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,185.19 : 3,015.51 = 1,190.47 : x
  2. Step 2: Convert to fraction form
    2,185.19/3,015.51 = 1,190.47/x
  3. Step 3: Cross multiply
    2,185.19x = 3,015.51 × 1,190.47
  4. Step 4: Simplify right side
    2,185.19x = 3,589,874.19
  5. Step 5: Solve for x
    x = 3,589,874.19/2,185.19
  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.