Home / 3,152.20-4,721.10-1,611.40

Finding the Fourth Proportional to 3,152.20, 4,721.10 and 1,611.40

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Solution

The fourth proportional to 3,152.20, 4,721.10 and 1,611.40 is: 2,413.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,152.20 : 4,721.10 = 1,611.40 : x
  2. Step 2: Convert to fraction form
    3,152.20/4,721.10 = 1,611.40/x
  3. Step 3: Cross multiply
    3,152.20x = 4,721.10 × 1,611.40
  4. Step 4: Simplify right side
    3,152.20x = 7,607,580.54
  5. Step 5: Solve for x
    x = 7,607,580.54/3,152.20
  6. Step 6: Final answer
    x = 2,413.42

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1.5x scale

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.