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Finding the Fourth Proportional to 2,115.95, 3,173.91 and 576.95

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Solution

The fourth proportional to 2,115.95, 3,173.91 and 576.95 is: 865.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,115.95 : 3,173.91 = 576.95 : x
  2. Step 2: Convert to fraction form
    2,115.95/3,173.91 = 576.95/x
  3. Step 3: Cross multiply
    2,115.95x = 3,173.91 × 576.95
  4. Step 4: Simplify right side
    2,115.95x = 1,831,171.50
  5. Step 5: Solve for x
    x = 1,831,171.50/2,115.95
  6. Step 6: Final answer
    x = 865.42

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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.