Home / 7,750.80-11,620.35-3,998.55

Finding the Fourth Proportional to 7,750.80, 11,620.35 and 3,998.55

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Solution

The fourth proportional to 7,750.80, 11,620.35 and 3,998.55 is: 5,994.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,750.80 : 11,620.35 = 3,998.55 : x
  2. Step 2: Convert to fraction form
    7,750.80/11,620.35 = 3,998.55/x
  3. Step 3: Cross multiply
    7,750.80x = 11,620.35 × 3,998.55
  4. Step 4: Simplify right side
    7,750.80x = 46,464,572.10
  5. Step 5: Solve for x
    x = 46,464,572.10/7,750.80
  6. Step 6: Final answer
    x = 5,994.81

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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.