Home / 7,667.64-11,502.11-2,120.99

Finding the Fourth Proportional to 7,667.64, 11,502.11 and 2,120.99

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Solution

The fourth proportional to 7,667.64, 11,502.11 and 2,120.99 is: 3,181.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,667.64 : 11,502.11 = 2,120.99 : x
  2. Step 2: Convert to fraction form
    7,667.64/11,502.11 = 2,120.99/x
  3. Step 3: Cross multiply
    7,667.64x = 11,502.11 × 2,120.99
  4. Step 4: Simplify right side
    7,667.64x = 24,395,808.08
  5. Step 5: Solve for x
    x = 24,395,808.08/7,667.64
  6. Step 6: Final answer
    x = 3,181.66

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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.