Home / 7,777.87-11,667.48-2,231.68

Finding the Fourth Proportional to 7,777.87, 11,667.48 and 2,231.68

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Solution

The fourth proportional to 7,777.87, 11,667.48 and 2,231.68 is: 3,347.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,777.87 : 11,667.48 = 2,231.68 : x
  2. Step 2: Convert to fraction form
    7,777.87/11,667.48 = 2,231.68/x
  3. Step 3: Cross multiply
    7,777.87x = 11,667.48 × 2,231.68
  4. Step 4: Simplify right side
    7,777.87x = 26,038,081.77
  5. Step 5: Solve for x
    x = 26,038,081.77/7,777.87
  6. Step 6: Final answer
    x = 3,347.71

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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.