Home / 1,293.43-1,939.01-513.98

Finding the Fourth Proportional to 1,293.43, 1,939.01 and 513.98

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Solution

The fourth proportional to 1,293.43, 1,939.01 and 513.98 is: 770.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,293.43 : 1,939.01 = 513.98 : x
  2. Step 2: Convert to fraction form
    1,293.43/1,939.01 = 513.98/x
  3. Step 3: Cross multiply
    1,293.43x = 1,939.01 × 513.98
  4. Step 4: Simplify right side
    1,293.43x = 996,609.79
  5. Step 5: Solve for x
    x = 996,609.79/1,293.43
  6. Step 6: Final answer
    x = 770.52

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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.