Home / 4,779.81-7,172.07-2,149.13

Finding the Fourth Proportional to 4,779.81, 7,172.07 and 2,149.13

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Solution

The fourth proportional to 4,779.81, 7,172.07 and 2,149.13 is: 3,224.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,779.81 : 7,172.07 = 2,149.13 : x
  2. Step 2: Convert to fraction form
    4,779.81/7,172.07 = 2,149.13/x
  3. Step 3: Cross multiply
    4,779.81x = 7,172.07 × 2,149.13
  4. Step 4: Simplify right side
    4,779.81x = 15,413,674.94
  5. Step 5: Solve for x
    x = 15,413,674.94/4,779.81
  6. Step 6: Final answer
    x = 3,224.75

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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.