Home / 5,081.19-7,619.35-2,157.90

Finding the Fourth Proportional to 5,081.19, 7,619.35 and 2,157.90

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Solution

The fourth proportional to 5,081.19, 7,619.35 and 2,157.90 is: 3,235.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,081.19 : 7,619.35 = 2,157.90 : x
  2. Step 2: Convert to fraction form
    5,081.19/7,619.35 = 2,157.90/x
  3. Step 3: Cross multiply
    5,081.19x = 7,619.35 × 2,157.90
  4. Step 4: Simplify right side
    5,081.19x = 16,441,746.48
  5. Step 5: Solve for x
    x = 16,441,746.48/5,081.19
  6. Step 6: Final answer
    x = 3,235.81

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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.