Home / 5,249.21-7,243.65-2,890.91

Finding the Fourth Proportional to 5,249.21, 7,243.65 and 2,890.91

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Solution

The fourth proportional to 5,249.21, 7,243.65 and 2,890.91 is: 3,989.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,249.21 : 7,243.65 = 2,890.91 : x
  2. Step 2: Convert to fraction form
    5,249.21/7,243.65 = 2,890.91/x
  3. Step 3: Cross multiply
    5,249.21x = 7,243.65 × 2,890.91
  4. Step 4: Simplify right side
    5,249.21x = 20,940,740.22
  5. Step 5: Solve for x
    x = 20,940,740.22/5,249.21
  6. Step 6: Final answer
    x = 3,989.31

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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.