Home / 5,619.94-8,430.31-2,157.19

Finding the Fourth Proportional to 5,619.94, 8,430.31 and 2,157.19

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Solution

The fourth proportional to 5,619.94, 8,430.31 and 2,157.19 is: 3,235.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,619.94 : 8,430.31 = 2,157.19 : x
  2. Step 2: Convert to fraction form
    5,619.94/8,430.31 = 2,157.19/x
  3. Step 3: Cross multiply
    5,619.94x = 8,430.31 × 2,157.19
  4. Step 4: Simplify right side
    5,619.94x = 18,185,762.05
  5. Step 5: Solve for x
    x = 18,185,762.05/5,619.94
  6. Step 6: Final answer
    x = 3,235.94

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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.