Home / 5,815.80-8,718.57-2,117.37

Finding the Fourth Proportional to 5,815.80, 8,718.57 and 2,117.37

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Solution

The fourth proportional to 5,815.80, 8,718.57 and 2,117.37 is: 3,174.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,815.80 : 8,718.57 = 2,117.37 : x
  2. Step 2: Convert to fraction form
    5,815.80/8,718.57 = 2,117.37/x
  3. Step 3: Cross multiply
    5,815.80x = 8,718.57 × 2,117.37
  4. Step 4: Simplify right side
    5,815.80x = 18,460,438.56
  5. Step 5: Solve for x
    x = 18,460,438.56/5,815.80
  6. Step 6: Final answer
    x = 3,174.19

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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.