Home / 2,255.14-3,111.90-1,310.95

Finding the Fourth Proportional to 2,255.14, 3,111.90 and 1,310.95

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Solution

The fourth proportional to 2,255.14, 3,111.90 and 1,310.95 is: 1,809.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,255.14 : 3,111.90 = 1,310.95 : x
  2. Step 2: Convert to fraction form
    2,255.14/3,111.90 = 1,310.95/x
  3. Step 3: Cross multiply
    2,255.14x = 3,111.90 × 1,310.95
  4. Step 4: Simplify right side
    2,255.14x = 4,079,529.75
  5. Step 5: Solve for x
    x = 4,079,529.75/2,255.14
  6. Step 6: Final answer
    x = 1,809.00

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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.