Home / 5,815.89-8,725.97-2,118.35

Finding the Fourth Proportional to 5,815.89, 8,725.97 and 2,118.35

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Solution

The fourth proportional to 5,815.89, 8,725.97 and 2,118.35 is: 3,178.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,815.89 : 8,725.97 = 2,118.35 : x
  2. Step 2: Convert to fraction form
    5,815.89/8,725.97 = 2,118.35/x
  3. Step 3: Cross multiply
    5,815.89x = 8,725.97 × 2,118.35
  4. Step 4: Simplify right side
    5,815.89x = 18,484,685.66
  5. Step 5: Solve for x
    x = 18,484,685.66/5,815.89
  6. Step 6: Final answer
    x = 3,178.31

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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.