Home / 3,911.90-5,866.68-1,571.15

Finding the Fourth Proportional to 3,911.90, 5,866.68 and 1,571.15

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Solution

The fourth proportional to 3,911.90, 5,866.68 and 1,571.15 is: 2,356.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,911.90 : 5,866.68 = 1,571.15 : x
  2. Step 2: Convert to fraction form
    3,911.90/5,866.68 = 1,571.15/x
  3. Step 3: Cross multiply
    3,911.90x = 5,866.68 × 1,571.15
  4. Step 4: Simplify right side
    3,911.90x = 9,217,413.00
  5. Step 5: Solve for x
    x = 9,217,413.00/3,911.90
  6. Step 6: Final answer
    x = 2,356.25

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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.