Home / 4,779.31-7,169.86-2,146.75

Finding the Fourth Proportional to 4,779.31, 7,169.86 and 2,146.75

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Solution

The fourth proportional to 4,779.31, 7,169.86 and 2,146.75 is: 3,220.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,779.31 : 7,169.86 = 2,146.75 : x
  2. Step 2: Convert to fraction form
    4,779.31/7,169.86 = 2,146.75/x
  3. Step 3: Cross multiply
    4,779.31x = 7,169.86 × 2,146.75
  4. Step 4: Simplify right side
    4,779.31x = 15,391,873.66
  5. Step 5: Solve for x
    x = 15,391,873.66/4,779.31
  6. Step 6: Final answer
    x = 3,220.52

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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.