Home / 7,680.81-11,523.65-4,217.25

Finding the Fourth Proportional to 7,680.81, 11,523.65 and 4,217.25

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Solution

The fourth proportional to 7,680.81, 11,523.65 and 4,217.25 is: 6,327.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,680.81 : 11,523.65 = 4,217.25 : x
  2. Step 2: Convert to fraction form
    7,680.81/11,523.65 = 4,217.25/x
  3. Step 3: Cross multiply
    7,680.81x = 11,523.65 × 4,217.25
  4. Step 4: Simplify right side
    7,680.81x = 48,598,091.88
  5. Step 5: Solve for x
    x = 48,598,091.88/7,680.81
  6. Step 6: Final answer
    x = 6,327.21

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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.