Home / 5,091.81-7,672.41-4,187.62

Finding the Fourth Proportional to 5,091.81, 7,672.41 and 4,187.62

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Solution

The fourth proportional to 5,091.81, 7,672.41 and 4,187.62 is: 6,309.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,091.81 : 7,672.41 = 4,187.62 : x
  2. Step 2: Convert to fraction form
    5,091.81/7,672.41 = 4,187.62/x
  3. Step 3: Cross multiply
    5,091.81x = 7,672.41 × 4,187.62
  4. Step 4: Simplify right side
    5,091.81x = 32,129,137.56
  5. Step 5: Solve for x
    x = 32,129,137.56/5,091.81
  6. Step 6: Final answer
    x = 6,309.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.