Home / 1,293.37-1,938.79-513.11

Finding the Fourth Proportional to 1,293.37, 1,938.79 and 513.11

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Solution

The fourth proportional to 1,293.37, 1,938.79 and 513.11 is: 769.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,293.37 : 1,938.79 = 513.11 : x
  2. Step 2: Convert to fraction form
    1,293.37/1,938.79 = 513.11/x
  3. Step 3: Cross multiply
    1,293.37x = 1,938.79 × 513.11
  4. Step 4: Simplify right side
    1,293.37x = 994,812.54
  5. Step 5: Solve for x
    x = 994,812.54/1,293.37
  6. Step 6: Final answer
    x = 769.16

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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.