Home / 5,382.96-8,071.81-2,219.81

Finding the Fourth Proportional to 5,382.96, 8,071.81 and 2,219.81

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Solution

The fourth proportional to 5,382.96, 8,071.81 and 2,219.81 is: 3,328.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,382.96 : 8,071.81 = 2,219.81 : x
  2. Step 2: Convert to fraction form
    5,382.96/8,071.81 = 2,219.81/x
  3. Step 3: Cross multiply
    5,382.96x = 8,071.81 × 2,219.81
  4. Step 4: Simplify right side
    5,382.96x = 17,917,868.92
  5. Step 5: Solve for x
    x = 17,917,868.92/5,382.96
  6. Step 6: Final answer
    x = 3,328.63

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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.