Home / 5,620.16-8,430.46-2,109.80

Finding the Fourth Proportional to 5,620.16, 8,430.46 and 2,109.80

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Solution

The fourth proportional to 5,620.16, 8,430.46 and 2,109.80 is: 3,164.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,620.16 : 8,430.46 = 2,109.80 : x
  2. Step 2: Convert to fraction form
    5,620.16/8,430.46 = 2,109.80/x
  3. Step 3: Cross multiply
    5,620.16x = 8,430.46 × 2,109.80
  4. Step 4: Simplify right side
    5,620.16x = 17,786,584.51
  5. Step 5: Solve for x
    x = 17,786,584.51/5,620.16
  6. Step 6: Final answer
    x = 3,164.78

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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.