Home / 3,091.40-4,638.62-1,447.71

Finding the Fourth Proportional to 3,091.40, 4,638.62 and 1,447.71

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Solution

The fourth proportional to 3,091.40, 4,638.62 and 1,447.71 is: 2,172.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,091.40 : 4,638.62 = 1,447.71 : x
  2. Step 2: Convert to fraction form
    3,091.40/4,638.62 = 1,447.71/x
  3. Step 3: Cross multiply
    3,091.40x = 4,638.62 × 1,447.71
  4. Step 4: Simplify right side
    3,091.40x = 6,715,376.56
  5. Step 5: Solve for x
    x = 6,715,376.56/3,091.40
  6. Step 6: Final answer
    x = 2,172.28

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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.