Home / 4,960.80-7,430.40-3,211.20

Finding the Fourth Proportional to 4,960.80, 7,430.40 and 3,211.20

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Solution

The fourth proportional to 4,960.80, 7,430.40 and 3,211.20 is: 4,809.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,960.80 : 7,430.40 = 3,211.20 : x
  2. Step 2: Convert to fraction form
    4,960.80/7,430.40 = 3,211.20/x
  3. Step 3: Cross multiply
    4,960.80x = 7,430.40 × 3,211.20
  4. Step 4: Simplify right side
    4,960.80x = 23,860,500.48
  5. Step 5: Solve for x
    x = 23,860,500.48/4,960.80
  6. Step 6: Final answer
    x = 4,809.81

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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.