Home / 3,213.75-4,818.78-1,264.89

Finding the Fourth Proportional to 3,213.75, 4,818.78 and 1,264.89

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Solution

The fourth proportional to 3,213.75, 4,818.78 and 1,264.89 is: 1,896.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,213.75 : 4,818.78 = 1,264.89 : x
  2. Step 2: Convert to fraction form
    3,213.75/4,818.78 = 1,264.89/x
  3. Step 3: Cross multiply
    3,213.75x = 4,818.78 × 1,264.89
  4. Step 4: Simplify right side
    3,213.75x = 6,095,226.63
  5. Step 5: Solve for x
    x = 6,095,226.63/3,213.75
  6. Step 6: Final answer
    x = 1,896.61

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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.