Home / 2,255.13-3,111.63-1,310.92

Finding the Fourth Proportional to 2,255.13, 3,111.63 and 1,310.92

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Solution

The fourth proportional to 2,255.13, 3,111.63 and 1,310.92 is: 1,808.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,255.13 : 3,111.63 = 1,310.92 : x
  2. Step 2: Convert to fraction form
    2,255.13/3,111.63 = 1,310.92/x
  3. Step 3: Cross multiply
    2,255.13x = 3,111.63 × 1,310.92
  4. Step 4: Simplify right side
    2,255.13x = 4,079,098.00
  5. Step 5: Solve for x
    x = 4,079,098.00/2,255.13
  6. Step 6: Final answer
    x = 1,808.81

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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.