Home / 4,990.45-7,479.60-2,214.18

Finding the Fourth Proportional to 4,990.45, 7,479.60 and 2,214.18

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Solution

The fourth proportional to 4,990.45, 7,479.60 and 2,214.18 is: 3,318.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,990.45 : 7,479.60 = 2,214.18 : x
  2. Step 2: Convert to fraction form
    4,990.45/7,479.60 = 2,214.18/x
  3. Step 3: Cross multiply
    4,990.45x = 7,479.60 × 2,214.18
  4. Step 4: Simplify right side
    4,990.45x = 16,561,143.33
  5. Step 5: Solve for x
    x = 16,561,143.33/4,990.45
  6. Step 6: Final answer
    x = 3,318.57

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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.