Home / 2,186.81-3,018.15-1,243.02

Finding the Fourth Proportional to 2,186.81, 3,018.15 and 1,243.02

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Solution

The fourth proportional to 2,186.81, 3,018.15 and 1,243.02 is: 1,715.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,186.81 : 3,018.15 = 1,243.02 : x
  2. Step 2: Convert to fraction form
    2,186.81/3,018.15 = 1,243.02/x
  3. Step 3: Cross multiply
    2,186.81x = 3,018.15 × 1,243.02
  4. Step 4: Simplify right side
    2,186.81x = 3,751,620.81
  5. Step 5: Solve for x
    x = 3,751,620.81/2,186.81
  6. Step 6: Final answer
    x = 1,715.57

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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.