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Finding the Fourth Proportional to 3,413.34, 4,710.41 and 1,921.25

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Solution

The fourth proportional to 3,413.34, 4,710.41 and 1,921.25 is: 2,651.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,413.34 : 4,710.41 = 1,921.25 : x
  2. Step 2: Convert to fraction form
    3,413.34/4,710.41 = 1,921.25/x
  3. Step 3: Cross multiply
    3,413.34x = 4,710.41 × 1,921.25
  4. Step 4: Simplify right side
    3,413.34x = 9,049,875.21
  5. Step 5: Solve for x
    x = 9,049,875.21/3,413.34
  6. Step 6: Final answer
    x = 2,651.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.