Home / 5,813.96-8,720.88-2,117.22

Finding the Fourth Proportional to 5,813.96, 8,720.88 and 2,117.22

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Solution

The fourth proportional to 5,813.96, 8,720.88 and 2,117.22 is: 3,175.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,813.96 : 8,720.88 = 2,117.22 : x
  2. Step 2: Convert to fraction form
    5,813.96/8,720.88 = 2,117.22/x
  3. Step 3: Cross multiply
    5,813.96x = 8,720.88 × 2,117.22
  4. Step 4: Simplify right side
    5,813.96x = 18,464,021.55
  5. Step 5: Solve for x
    x = 18,464,021.55/5,813.96
  6. Step 6: Final answer
    x = 3,175.81

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1.5x scale

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.