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Finding the Fourth Proportional to 6,511.74, 8,986.11 and 3,958.62

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Solution

The fourth proportional to 6,511.74, 8,986.11 and 3,958.62 is: 5,462.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,511.74 : 8,986.11 = 3,958.62 : x
  2. Step 2: Convert to fraction form
    6,511.74/8,986.11 = 3,958.62/x
  3. Step 3: Cross multiply
    6,511.74x = 8,986.11 × 3,958.62
  4. Step 4: Simplify right side
    6,511.74x = 35,572,594.77
  5. Step 5: Solve for x
    x = 35,572,594.77/6,511.74
  6. Step 6: Final answer
    x = 5,462.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.