Home / 1,283.62-1,926.60-667.70

Finding the Fourth Proportional to 1,283.62, 1,926.60 and 667.70

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Solution

The fourth proportional to 1,283.62, 1,926.60 and 667.70 is: 1,002.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,283.62 : 1,926.60 = 667.70 : x
  2. Step 2: Convert to fraction form
    1,283.62/1,926.60 = 667.70/x
  3. Step 3: Cross multiply
    1,283.62x = 1,926.60 × 667.70
  4. Step 4: Simplify right side
    1,283.62x = 1,286,390.82
  5. Step 5: Solve for x
    x = 1,286,390.82/1,283.62
  6. Step 6: Final answer
    x = 1,002.16

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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.