Home / 7,821.45-11,734.37-3,144.74

Finding the Fourth Proportional to 7,821.45, 11,734.37 and 3,144.74

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Solution

The fourth proportional to 7,821.45, 11,734.37 and 3,144.74 is: 4,717.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,821.45 : 11,734.37 = 3,144.74 : x
  2. Step 2: Convert to fraction form
    7,821.45/11,734.37 = 3,144.74/x
  3. Step 3: Cross multiply
    7,821.45x = 11,734.37 × 3,144.74
  4. Step 4: Simplify right side
    7,821.45x = 36,901,468.32
  5. Step 5: Solve for x
    x = 36,901,468.32/7,821.45
  6. Step 6: Final answer
    x = 4,717.98

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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.