Home / 5,813.82-8,720.65-1,431.31

Finding the Fourth Proportional to 5,813.82, 8,720.65 and 1,431.31

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Solution

The fourth proportional to 5,813.82, 8,720.65 and 1,431.31 is: 2,146.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,813.82 : 8,720.65 = 1,431.31 : x
  2. Step 2: Convert to fraction form
    5,813.82/8,720.65 = 1,431.31/x
  3. Step 3: Cross multiply
    5,813.82x = 8,720.65 × 1,431.31
  4. Step 4: Simplify right side
    5,813.82x = 12,481,953.55
  5. Step 5: Solve for x
    x = 12,481,953.55/5,813.82
  6. Step 6: Final answer
    x = 2,146.95

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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.