Home / 1,413.17-2,119.61-439.25

Finding the Fourth Proportional to 1,413.17, 2,119.61 and 439.25

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Solution

The fourth proportional to 1,413.17, 2,119.61 and 439.25 is: 658.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,413.17 : 2,119.61 = 439.25 : x
  2. Step 2: Convert to fraction form
    1,413.17/2,119.61 = 439.25/x
  3. Step 3: Cross multiply
    1,413.17x = 2,119.61 × 439.25
  4. Step 4: Simplify right side
    1,413.17x = 931,045.09
  5. Step 5: Solve for x
    x = 931,045.09/1,413.17
  6. Step 6: Final answer
    x = 658.84

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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.