Home / 1,284.58-1,926.48-667.95

Finding the Fourth Proportional to 1,284.58, 1,926.48 and 667.95

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Solution

The fourth proportional to 1,284.58, 1,926.48 and 667.95 is: 1,001.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,284.58 : 1,926.48 = 667.95 : x
  2. Step 2: Convert to fraction form
    1,284.58/1,926.48 = 667.95/x
  3. Step 3: Cross multiply
    1,284.58x = 1,926.48 × 667.95
  4. Step 4: Simplify right side
    1,284.58x = 1,286,787.60
  5. Step 5: Solve for x
    x = 1,286,787.60/1,284.58
  6. Step 6: Final answer
    x = 1,001.72

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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.