Home / 1,941.47-2,678.51-1,243.25

Finding the Fourth Proportional to 1,941.47, 2,678.51 and 1,243.25

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Solution

The fourth proportional to 1,941.47, 2,678.51 and 1,243.25 is: 1,715.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,941.47 : 2,678.51 = 1,243.25 : x
  2. Step 2: Convert to fraction form
    1,941.47/2,678.51 = 1,243.25/x
  3. Step 3: Cross multiply
    1,941.47x = 2,678.51 × 1,243.25
  4. Step 4: Simplify right side
    1,941.47x = 3,330,057.56
  5. Step 5: Solve for x
    x = 3,330,057.56/1,941.47
  6. Step 6: Final answer
    x = 1,715.22

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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.