Home / 7,218.50-9,961.53-4,074.62

Finding the Fourth Proportional to 7,218.50, 9,961.53 and 4,074.62

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Solution

The fourth proportional to 7,218.50, 9,961.53 and 4,074.62 is: 5,622.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,218.50 : 9,961.53 = 4,074.62 : x
  2. Step 2: Convert to fraction form
    7,218.50/9,961.53 = 4,074.62/x
  3. Step 3: Cross multiply
    7,218.50x = 9,961.53 × 4,074.62
  4. Step 4: Simplify right side
    7,218.50x = 40,589,449.37
  5. Step 5: Solve for x
    x = 40,589,449.37/7,218.50
  6. Step 6: Final answer
    x = 5,622.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.