Home / 5,178.52-7,149.30-3,413.20

Finding the Fourth Proportional to 5,178.52, 7,149.30 and 3,413.20

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Solution

The fourth proportional to 5,178.52, 7,149.30 and 3,413.20 is: 4,712.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,178.52 : 7,149.30 = 3,413.20 : x
  2. Step 2: Convert to fraction form
    5,178.52/7,149.30 = 3,413.20/x
  3. Step 3: Cross multiply
    5,178.52x = 7,149.30 × 3,413.20
  4. Step 4: Simplify right side
    5,178.52x = 24,401,990.76
  5. Step 5: Solve for x
    x = 24,401,990.76/5,178.52
  6. Step 6: Final answer
    x = 4,712.16

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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.