Home / 3,921.35-5,413.99-2,430.84

Finding the Fourth Proportional to 3,921.35, 5,413.99 and 2,430.84

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Solution

The fourth proportional to 3,921.35, 5,413.99 and 2,430.84 is: 3,356.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,921.35 : 5,413.99 = 2,430.84 : x
  2. Step 2: Convert to fraction form
    3,921.35/5,413.99 = 2,430.84/x
  3. Step 3: Cross multiply
    3,921.35x = 5,413.99 × 2,430.84
  4. Step 4: Simplify right side
    3,921.35x = 13,160,562.23
  5. Step 5: Solve for x
    x = 13,160,562.23/3,921.35
  6. Step 6: Final answer
    x = 3,356.13

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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.