Home / 1,278.69-1,922.33-1,008.05

Finding the Fourth Proportional to 1,278.69, 1,922.33 and 1,008.05

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Solution

The fourth proportional to 1,278.69, 1,922.33 and 1,008.05 is: 1,515.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,278.69 : 1,922.33 = 1,008.05 : x
  2. Step 2: Convert to fraction form
    1,278.69/1,922.33 = 1,008.05/x
  3. Step 3: Cross multiply
    1,278.69x = 1,922.33 × 1,008.05
  4. Step 4: Simplify right side
    1,278.69x = 1,937,797.66
  5. Step 5: Solve for x
    x = 1,937,797.66/1,278.69
  6. Step 6: Final answer
    x = 1,515.46

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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.