Home / 7,272.40-10,894.20-4,190.80

Finding the Fourth Proportional to 7,272.40, 10,894.20 and 4,190.80

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Solution

The fourth proportional to 7,272.40, 10,894.20 and 4,190.80 is: 6,277.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,272.40 : 10,894.20 = 4,190.80 : x
  2. Step 2: Convert to fraction form
    7,272.40/10,894.20 = 4,190.80/x
  3. Step 3: Cross multiply
    7,272.40x = 10,894.20 × 4,190.80
  4. Step 4: Simplify right side
    7,272.40x = 45,655,413.36
  5. Step 5: Solve for x
    x = 45,655,413.36/7,272.40
  6. Step 6: Final answer
    x = 6,277.90

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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.