Home / 4,779.99-7,163.79-2,145.57

Finding the Fourth Proportional to 4,779.99, 7,163.79 and 2,145.57

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Solution

The fourth proportional to 4,779.99, 7,163.79 and 2,145.57 is: 3,215.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,779.99 : 7,163.79 = 2,145.57 : x
  2. Step 2: Convert to fraction form
    4,779.99/7,163.79 = 2,145.57/x
  3. Step 3: Cross multiply
    4,779.99x = 7,163.79 × 2,145.57
  4. Step 4: Simplify right side
    4,779.99x = 15,370,412.91
  5. Step 5: Solve for x
    x = 15,370,412.91/4,779.99
  6. Step 6: Final answer
    x = 3,215.57

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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.