Home / 5,620.52-8,431.08-2,157.50

Finding the Fourth Proportional to 5,620.52, 8,431.08 and 2,157.50

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Solution

The fourth proportional to 5,620.52, 8,431.08 and 2,157.50 is: 3,236.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,620.52 : 8,431.08 = 2,157.50 : x
  2. Step 2: Convert to fraction form
    5,620.52/8,431.08 = 2,157.50/x
  3. Step 3: Cross multiply
    5,620.52x = 8,431.08 × 2,157.50
  4. Step 4: Simplify right side
    5,620.52x = 18,190,055.10
  5. Step 5: Solve for x
    x = 18,190,055.10/5,620.52
  6. Step 6: Final answer
    x = 3,236.37

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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.