Home / 1,243.44-1,716.66-1,013.40

Finding the Fourth Proportional to 1,243.44, 1,716.66 and 1,013.40

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Solution

The fourth proportional to 1,243.44, 1,716.66 and 1,013.40 is: 1,399.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,243.44 : 1,716.66 = 1,013.40 : x
  2. Step 2: Convert to fraction form
    1,243.44/1,716.66 = 1,013.40/x
  3. Step 3: Cross multiply
    1,243.44x = 1,716.66 × 1,013.40
  4. Step 4: Simplify right side
    1,243.44x = 1,739,663.24
  5. Step 5: Solve for x
    x = 1,739,663.24/1,243.44
  6. Step 6: Final answer
    x = 1,399.07

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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.