Home / 6,289.45-9,430.53-2,128.07

Finding the Fourth Proportional to 6,289.45, 9,430.53 and 2,128.07

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Solution

The fourth proportional to 6,289.45, 9,430.53 and 2,128.07 is: 3,190.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,289.45 : 9,430.53 = 2,128.07 : x
  2. Step 2: Convert to fraction form
    6,289.45/9,430.53 = 2,128.07/x
  3. Step 3: Cross multiply
    6,289.45x = 9,430.53 × 2,128.07
  4. Step 4: Simplify right side
    6,289.45x = 20,068,843.57
  5. Step 5: Solve for x
    x = 20,068,843.57/6,289.45
  6. Step 6: Final answer
    x = 3,190.88

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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.