Home / 3,518.40-5,272.74-3,413.28

Finding the Fourth Proportional to 3,518.40, 5,272.74 and 3,413.28

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Solution

The fourth proportional to 3,518.40, 5,272.74 and 3,413.28 is: 5,115.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,518.40 : 5,272.74 = 3,413.28 : x
  2. Step 2: Convert to fraction form
    3,518.40/5,272.74 = 3,413.28/x
  3. Step 3: Cross multiply
    3,518.40x = 5,272.74 × 3,413.28
  4. Step 4: Simplify right side
    3,518.40x = 17,997,337.99
  5. Step 5: Solve for x
    x = 17,997,337.99/3,518.40
  6. Step 6: Final answer
    x = 5,115.21

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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.