Home / 2,072.58-3,108.75-512.50

Finding the Fourth Proportional to 2,072.58, 3,108.75 and 512.50

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Solution

The fourth proportional to 2,072.58, 3,108.75 and 512.50 is: 768.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,072.58 : 3,108.75 = 512.50 : x
  2. Step 2: Convert to fraction form
    2,072.58/3,108.75 = 512.50/x
  3. Step 3: Cross multiply
    2,072.58x = 3,108.75 × 512.50
  4. Step 4: Simplify right side
    2,072.58x = 1,593,234.38
  5. Step 5: Solve for x
    x = 1,593,234.38/2,072.58
  6. Step 6: Final answer
    x = 768.72

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1.5x scale

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.