Home / 5,245.31-7,865.66-2,779.56

Finding the Fourth Proportional to 5,245.31, 7,865.66 and 2,779.56

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Solution

The fourth proportional to 5,245.31, 7,865.66 and 2,779.56 is: 4,168.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,245.31 : 7,865.66 = 2,779.56 : x
  2. Step 2: Convert to fraction form
    5,245.31/7,865.66 = 2,779.56/x
  3. Step 3: Cross multiply
    5,245.31x = 7,865.66 × 2,779.56
  4. Step 4: Simplify right side
    5,245.31x = 21,863,060.01
  5. Step 5: Solve for x
    x = 21,863,060.01/5,245.31
  6. Step 6: Final answer
    x = 4,168.12

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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.