Home / 5,631.51-8,438.61-2,166.87

Finding the Fourth Proportional to 5,631.51, 8,438.61 and 2,166.87

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Solution

The fourth proportional to 5,631.51, 8,438.61 and 2,166.87 is: 3,246.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,631.51 : 8,438.61 = 2,166.87 : x
  2. Step 2: Convert to fraction form
    5,631.51/8,438.61 = 2,166.87/x
  3. Step 3: Cross multiply
    5,631.51x = 8,438.61 × 2,166.87
  4. Step 4: Simplify right side
    5,631.51x = 18,285,370.85
  5. Step 5: Solve for x
    x = 18,285,370.85/5,631.51
  6. Step 6: Final answer
    x = 3,246.97

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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.