Home / 3,447.21-5,172.14-1,257.45

Finding the Fourth Proportional to 3,447.21, 5,172.14 and 1,257.45

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Solution

The fourth proportional to 3,447.21, 5,172.14 and 1,257.45 is: 1,886.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,447.21 : 5,172.14 = 1,257.45 : x
  2. Step 2: Convert to fraction form
    3,447.21/5,172.14 = 1,257.45/x
  3. Step 3: Cross multiply
    3,447.21x = 5,172.14 × 1,257.45
  4. Step 4: Simplify right side
    3,447.21x = 6,503,707.44
  5. Step 5: Solve for x
    x = 6,503,707.44/3,447.21
  6. Step 6: Final answer
    x = 1,886.66

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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.