Home / 5,818.80-8,730.51-2,121.27

Finding the Fourth Proportional to 5,818.80, 8,730.51 and 2,121.27

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Solution

The fourth proportional to 5,818.80, 8,730.51 and 2,121.27 is: 3,182.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,818.80 : 8,730.51 = 2,121.27 : x
  2. Step 2: Convert to fraction form
    5,818.80/8,730.51 = 2,121.27/x
  3. Step 3: Cross multiply
    5,818.80x = 8,730.51 × 2,121.27
  4. Step 4: Simplify right side
    5,818.80x = 18,519,768.95
  5. Step 5: Solve for x
    x = 18,519,768.95/5,818.80
  6. Step 6: Final answer
    x = 3,182.75

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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.