Home / 3,212.50-4,818.75-2,102.85

Finding the Fourth Proportional to 3,212.50, 4,818.75 and 2,102.85

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Solution

The fourth proportional to 3,212.50, 4,818.75 and 2,102.85 is: 3,154.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,212.50 : 4,818.75 = 2,102.85 : x
  2. Step 2: Convert to fraction form
    3,212.50/4,818.75 = 2,102.85/x
  3. Step 3: Cross multiply
    3,212.50x = 4,818.75 × 2,102.85
  4. Step 4: Simplify right side
    3,212.50x = 10,133,108.44
  5. Step 5: Solve for x
    x = 10,133,108.44/3,212.50
  6. Step 6: Final answer
    x = 3,154.28

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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.