Home / 1,278.75-1,918.64-1,034.25

Finding the Fourth Proportional to 1,278.75, 1,918.64 and 1,034.25

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Solution

The fourth proportional to 1,278.75, 1,918.64 and 1,034.25 is: 1,551.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,278.75 : 1,918.64 = 1,034.25 : x
  2. Step 2: Convert to fraction form
    1,278.75/1,918.64 = 1,034.25/x
  3. Step 3: Cross multiply
    1,278.75x = 1,918.64 × 1,034.25
  4. Step 4: Simplify right side
    1,278.75x = 1,984,353.42
  5. Step 5: Solve for x
    x = 1,984,353.42/1,278.75
  6. Step 6: Final answer
    x = 1,551.79

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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.