Home / 4,747.48-7,111.65-3,975.20

Finding the Fourth Proportional to 4,747.48, 7,111.65 and 3,975.20

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Solution

The fourth proportional to 4,747.48, 7,111.65 and 3,975.20 is: 5,954.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,747.48 : 7,111.65 = 3,975.20 : x
  2. Step 2: Convert to fraction form
    4,747.48/7,111.65 = 3,975.20/x
  3. Step 3: Cross multiply
    4,747.48x = 7,111.65 × 3,975.20
  4. Step 4: Simplify right side
    4,747.48x = 28,270,231.08
  5. Step 5: Solve for x
    x = 28,270,231.08/4,747.48
  6. Step 6: Final answer
    x = 5,954.79

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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.