Home / 7,415.88-11,125.64-2,221.75

Finding the Fourth Proportional to 7,415.88, 11,125.64 and 2,221.75

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Solution

The fourth proportional to 7,415.88, 11,125.64 and 2,221.75 is: 3,333.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,415.88 : 11,125.64 = 2,221.75 : x
  2. Step 2: Convert to fraction form
    7,415.88/11,125.64 = 2,221.75/x
  3. Step 3: Cross multiply
    7,415.88x = 11,125.64 × 2,221.75
  4. Step 4: Simplify right side
    7,415.88x = 24,718,390.67
  5. Step 5: Solve for x
    x = 24,718,390.67/7,415.88
  6. Step 6: Final answer
    x = 3,333.17

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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.