Home / 5,107.30-7,661.39-1,409.54

Finding the Fourth Proportional to 5,107.30, 7,661.39 and 1,409.54

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Solution

The fourth proportional to 5,107.30, 7,661.39 and 1,409.54 is: 2,114.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,107.30 : 7,661.39 = 1,409.54 : x
  2. Step 2: Convert to fraction form
    5,107.30/7,661.39 = 1,409.54/x
  3. Step 3: Cross multiply
    5,107.30x = 7,661.39 × 1,409.54
  4. Step 4: Simplify right side
    5,107.30x = 10,798,990.31
  5. Step 5: Solve for x
    x = 10,798,990.31/5,107.30
  6. Step 6: Final answer
    x = 2,114.42

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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.