Home / 2,316.96-3,190.32-2,131.20

Finding the Fourth Proportional to 2,316.96, 3,190.32 and 2,131.20

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Solution

The fourth proportional to 2,316.96, 3,190.32 and 2,131.20 is: 2,934.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,316.96 : 3,190.32 = 2,131.20 : x
  2. Step 2: Convert to fraction form
    2,316.96/3,190.32 = 2,131.20/x
  3. Step 3: Cross multiply
    2,316.96x = 3,190.32 × 2,131.20
  4. Step 4: Simplify right side
    2,316.96x = 6,799,209.98
  5. Step 5: Solve for x
    x = 6,799,209.98/2,316.96
  6. Step 6: Final answer
    x = 2,934.54

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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.