Home / 3,131.55-4,323.11-1,953.27

Finding the Fourth Proportional to 3,131.55, 4,323.11 and 1,953.27

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Solution

The fourth proportional to 3,131.55, 4,323.11 and 1,953.27 is: 2,696.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,131.55 : 4,323.11 = 1,953.27 : x
  2. Step 2: Convert to fraction form
    3,131.55/4,323.11 = 1,953.27/x
  3. Step 3: Cross multiply
    3,131.55x = 4,323.11 × 1,953.27
  4. Step 4: Simplify right side
    3,131.55x = 8,444,191.30
  5. Step 5: Solve for x
    x = 8,444,191.30/3,131.55
  6. Step 6: Final answer
    x = 2,696.49

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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.