Home / 4,914.70-6,782.91-2,818.78

Finding the Fourth Proportional to 4,914.70, 6,782.91 and 2,818.78

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Solution

The fourth proportional to 4,914.70, 6,782.91 and 2,818.78 is: 3,890.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,914.70 : 6,782.91 = 2,818.78 : x
  2. Step 2: Convert to fraction form
    4,914.70/6,782.91 = 2,818.78/x
  3. Step 3: Cross multiply
    4,914.70x = 6,782.91 × 2,818.78
  4. Step 4: Simplify right side
    4,914.70x = 19,119,531.05
  5. Step 5: Solve for x
    x = 19,119,531.05/4,914.70
  6. Step 6: Final answer
    x = 3,890.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.