Home / 7,147.96-10,720.86-2,764.87

Finding the Fourth Proportional to 7,147.96, 10,720.86 and 2,764.87

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Solution

The fourth proportional to 7,147.96, 10,720.86 and 2,764.87 is: 4,146.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,147.96 : 10,720.86 = 2,764.87 : x
  2. Step 2: Convert to fraction form
    7,147.96/10,720.86 = 2,764.87/x
  3. Step 3: Cross multiply
    7,147.96x = 10,720.86 × 2,764.87
  4. Step 4: Simplify right side
    7,147.96x = 29,641,784.19
  5. Step 5: Solve for x
    x = 29,641,784.19/7,147.96
  6. Step 6: Final answer
    x = 4,146.89

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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.