Home / 5,185.20-7,779.04-1,722.48

Finding the Fourth Proportional to 5,185.20, 7,779.04 and 1,722.48

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Solution

The fourth proportional to 5,185.20, 7,779.04 and 1,722.48 is: 2,584.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,185.20 : 7,779.04 = 1,722.48 : x
  2. Step 2: Convert to fraction form
    5,185.20/7,779.04 = 1,722.48/x
  3. Step 3: Cross multiply
    5,185.20x = 7,779.04 × 1,722.48
  4. Step 4: Simplify right side
    5,185.20x = 13,399,240.82
  5. Step 5: Solve for x
    x = 13,399,240.82/5,185.20
  6. Step 6: Final answer
    x = 2,584.13

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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.