Home / 4,957.20-7,425-3,218.40

Finding the Fourth Proportional to 4,957.20, 7,425 and 3,218.40

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Solution

The fourth proportional to 4,957.20, 7,425 and 3,218.40 is: 4,820.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,957.20 : 7,425 = 3,218.40 : x
  2. Step 2: Convert to fraction form
    4,957.20/7,425 = 3,218.40/x
  3. Step 3: Cross multiply
    4,957.20x = 7,425 × 3,218.40
  4. Step 4: Simplify right side
    4,957.20x = 23,896,620
  5. Step 5: Solve for x
    x = 23,896,620/4,957.20
  6. Step 6: Final answer
    x = 4,820.59

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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.