Home / 3,191.58-4,405.57-1,865.71

Finding the Fourth Proportional to 3,191.58, 4,405.57 and 1,865.71

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Solution

The fourth proportional to 3,191.58, 4,405.57 and 1,865.71 is: 2,575.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,191.58 : 4,405.57 = 1,865.71 : x
  2. Step 2: Convert to fraction form
    3,191.58/4,405.57 = 1,865.71/x
  3. Step 3: Cross multiply
    3,191.58x = 4,405.57 × 1,865.71
  4. Step 4: Simplify right side
    3,191.58x = 8,219,500.33
  5. Step 5: Solve for x
    x = 8,219,500.33/3,191.58
  6. Step 6: Final answer
    x = 2,575.37

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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.