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Finding the Fourth Proportional to 3,607.59, 5,409.20 and 1,413.69

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Solution

The fourth proportional to 3,607.59, 5,409.20 and 1,413.69 is: 2,119.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,607.59 : 5,409.20 = 1,413.69 : x
  2. Step 2: Convert to fraction form
    3,607.59/5,409.20 = 1,413.69/x
  3. Step 3: Cross multiply
    3,607.59x = 5,409.20 × 1,413.69
  4. Step 4: Simplify right side
    3,607.59x = 7,646,924.88
  5. Step 5: Solve for x
    x = 7,646,924.88/3,607.59
  6. Step 6: Final answer
    x = 2,119.68

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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.