Home / 5,245.14-7,867.74-2,125.21

Finding the Fourth Proportional to 5,245.14, 7,867.74 and 2,125.21

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Solution

The fourth proportional to 5,245.14, 7,867.74 and 2,125.21 is: 3,187.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,245.14 : 7,867.74 = 2,125.21 : x
  2. Step 2: Convert to fraction form
    5,245.14/7,867.74 = 2,125.21/x
  3. Step 3: Cross multiply
    5,245.14x = 7,867.74 × 2,125.21
  4. Step 4: Simplify right side
    5,245.14x = 16,720,590.82
  5. Step 5: Solve for x
    x = 16,720,590.82/5,245.14
  6. Step 6: Final answer
    x = 3,187.82

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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.