Home / 3,875.36-5,814.66-1,278.56

Finding the Fourth Proportional to 3,875.36, 5,814.66 and 1,278.56

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Solution

The fourth proportional to 3,875.36, 5,814.66 and 1,278.56 is: 1,918.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,875.36 : 5,814.66 = 1,278.56 : x
  2. Step 2: Convert to fraction form
    3,875.36/5,814.66 = 1,278.56/x
  3. Step 3: Cross multiply
    3,875.36x = 5,814.66 × 1,278.56
  4. Step 4: Simplify right side
    3,875.36x = 7,434,391.69
  5. Step 5: Solve for x
    x = 7,434,391.69/3,875.36
  6. Step 6: Final answer
    x = 1,918.37

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.