Home / 5,250.45-7,875.07-2,131.85

Finding the Fourth Proportional to 5,250.45, 7,875.07 and 2,131.85

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Solution

The fourth proportional to 5,250.45, 7,875.07 and 2,131.85 is: 3,197.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,250.45 : 7,875.07 = 2,131.85 : x
  2. Step 2: Convert to fraction form
    5,250.45/7,875.07 = 2,131.85/x
  3. Step 3: Cross multiply
    5,250.45x = 7,875.07 × 2,131.85
  4. Step 4: Simplify right side
    5,250.45x = 16,788,467.98
  5. Step 5: Solve for x
    x = 16,788,467.98/5,250.45
  6. Step 6: Final answer
    x = 3,197.53

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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.