Home / 3,111.99-4,293.32-2,167.53

Finding the Fourth Proportional to 3,111.99, 4,293.32 and 2,167.53

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Solution

The fourth proportional to 3,111.99, 4,293.32 and 2,167.53 is: 2,990.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,111.99 : 4,293.32 = 2,167.53 : x
  2. Step 2: Convert to fraction form
    3,111.99/4,293.32 = 2,167.53/x
  3. Step 3: Cross multiply
    3,111.99x = 4,293.32 × 2,167.53
  4. Step 4: Simplify right side
    3,111.99x = 9,305,889.06
  5. Step 5: Solve for x
    x = 9,305,889.06/3,111.99
  6. Step 6: Final answer
    x = 2,990.33

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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.