Home / 5,620.13-8,430.59-2,157.38

Finding the Fourth Proportional to 5,620.13, 8,430.59 and 2,157.38

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Solution

The fourth proportional to 5,620.13, 8,430.59 and 2,157.38 is: 3,236.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,620.13 : 8,430.59 = 2,157.38 : x
  2. Step 2: Convert to fraction form
    5,620.13/8,430.59 = 2,157.38/x
  3. Step 3: Cross multiply
    5,620.13x = 8,430.59 × 2,157.38
  4. Step 4: Simplify right side
    5,620.13x = 18,187,949.49
  5. Step 5: Solve for x
    x = 18,187,949.49/5,620.13
  6. Step 6: Final answer
    x = 3,236.22

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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.