Home / 4,807.20-7,211.28-1,728.48

Finding the Fourth Proportional to 4,807.20, 7,211.28 and 1,728.48

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Solution

The fourth proportional to 4,807.20, 7,211.28 and 1,728.48 is: 2,592.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,807.20 : 7,211.28 = 1,728.48 : x
  2. Step 2: Convert to fraction form
    4,807.20/7,211.28 = 1,728.48/x
  3. Step 3: Cross multiply
    4,807.20x = 7,211.28 × 1,728.48
  4. Step 4: Simplify right side
    4,807.20x = 12,464,553.25
  5. Step 5: Solve for x
    x = 12,464,553.25/4,807.20
  6. Step 6: Final answer
    x = 2,592.89

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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.