Home / 3,131.22-4,317.48-2,137.08

Finding the Fourth Proportional to 3,131.22, 4,317.48 and 2,137.08

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Solution

The fourth proportional to 3,131.22, 4,317.48 and 2,137.08 is: 2,946.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,131.22 : 4,317.48 = 2,137.08 : x
  2. Step 2: Convert to fraction form
    3,131.22/4,317.48 = 2,137.08/x
  3. Step 3: Cross multiply
    3,131.22x = 4,317.48 × 2,137.08
  4. Step 4: Simplify right side
    3,131.22x = 9,226,800.16
  5. Step 5: Solve for x
    x = 9,226,800.16/3,131.22
  6. Step 6: Final answer
    x = 2,946.71

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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.