Home / 3,447.12-4,756.68-2,121.12

Finding the Fourth Proportional to 3,447.12, 4,756.68 and 2,121.12

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Solution

The fourth proportional to 3,447.12, 4,756.68 and 2,121.12 is: 2,926.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,447.12 : 4,756.68 = 2,121.12 : x
  2. Step 2: Convert to fraction form
    3,447.12/4,756.68 = 2,121.12/x
  3. Step 3: Cross multiply
    3,447.12x = 4,756.68 × 2,121.12
  4. Step 4: Simplify right side
    3,447.12x = 10,089,489.08
  5. Step 5: Solve for x
    x = 10,089,489.08/3,447.12
  6. Step 6: Final answer
    x = 2,926.93

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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.