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Finding the Fourth Proportional to 5,391.04, 8,078.24 and 4,413.12

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Solution

The fourth proportional to 5,391.04, 8,078.24 and 4,413.12 is: 6,612.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,391.04 : 8,078.24 = 4,413.12 : x
  2. Step 2: Convert to fraction form
    5,391.04/8,078.24 = 4,413.12/x
  3. Step 3: Cross multiply
    5,391.04x = 8,078.24 × 4,413.12
  4. Step 4: Simplify right side
    5,391.04x = 35,650,242.51
  5. Step 5: Solve for x
    x = 35,650,242.51/5,391.04
  6. Step 6: Final answer
    x = 6,612.87

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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.