Home / 5,255.51-7,887.86-2,137.22

Finding the Fourth Proportional to 5,255.51, 7,887.86 and 2,137.22

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Solution

The fourth proportional to 5,255.51, 7,887.86 and 2,137.22 is: 3,207.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,255.51 : 7,887.86 = 2,137.22 : x
  2. Step 2: Convert to fraction form
    5,255.51/7,887.86 = 2,137.22/x
  3. Step 3: Cross multiply
    5,255.51x = 7,887.86 × 2,137.22
  4. Step 4: Simplify right side
    5,255.51x = 16,858,042.02
  5. Step 5: Solve for x
    x = 16,858,042.02/5,255.51
  6. Step 6: Final answer
    x = 3,207.69

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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.