Home / 5,245.31-7,238.57-2,887.54

Finding the Fourth Proportional to 5,245.31, 7,238.57 and 2,887.54

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Solution

The fourth proportional to 5,245.31, 7,238.57 and 2,887.54 is: 3,984.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,245.31 : 7,238.57 = 2,887.54 : x
  2. Step 2: Convert to fraction form
    5,245.31/7,238.57 = 2,887.54/x
  3. Step 3: Cross multiply
    5,245.31x = 7,238.57 × 2,887.54
  4. Step 4: Simplify right side
    5,245.31x = 20,901,627.88
  5. Step 5: Solve for x
    x = 20,901,627.88/5,245.31
  6. Step 6: Final answer
    x = 3,984.82

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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.