Home / 7,415.08-11,122.38-2,221

Finding the Fourth Proportional to 7,415.08, 11,122.38 and 2,221

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Solution

The fourth proportional to 7,415.08, 11,122.38 and 2,221 is: 3,331.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,415.08 : 11,122.38 = 2,221 : x
  2. Step 2: Convert to fraction form
    7,415.08/11,122.38 = 2,221/x
  3. Step 3: Cross multiply
    7,415.08x = 11,122.38 × 2,221
  4. Step 4: Simplify right side
    7,415.08x = 24,702,805.98
  5. Step 5: Solve for x
    x = 24,702,805.98/7,415.08
  6. Step 6: Final answer
    x = 3,331.43

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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.