Home / 4,912.34-6,779.40-2,816.78

Finding the Fourth Proportional to 4,912.34, 6,779.40 and 2,816.78

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Solution

The fourth proportional to 4,912.34, 6,779.40 and 2,816.78 is: 3,887.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,912.34 : 6,779.40 = 2,816.78 : x
  2. Step 2: Convert to fraction form
    4,912.34/6,779.40 = 2,816.78/x
  3. Step 3: Cross multiply
    4,912.34x = 6,779.40 × 2,816.78
  4. Step 4: Simplify right side
    4,912.34x = 19,096,078.33
  5. Step 5: Solve for x
    x = 19,096,078.33/4,912.34
  6. Step 6: Final answer
    x = 3,887.37

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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.