Home / 7,751.80-11,621.85-3,999.55

Finding the Fourth Proportional to 7,751.80, 11,621.85 and 3,999.55

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Solution

The fourth proportional to 7,751.80, 11,621.85 and 3,999.55 is: 5,996.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,751.80 : 11,621.85 = 3,999.55 : x
  2. Step 2: Convert to fraction form
    7,751.80/11,621.85 = 3,999.55/x
  3. Step 3: Cross multiply
    7,751.80x = 11,621.85 × 3,999.55
  4. Step 4: Simplify right side
    7,751.80x = 46,482,170.17
  5. Step 5: Solve for x
    x = 46,482,170.17/7,751.80
  6. Step 6: Final answer
    x = 5,996.31

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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.