Home / 2,015.00-2,778.13-1,305.61

Finding the Fourth Proportional to 2,015.00, 2,778.13 and 1,305.61

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Solution

The fourth proportional to 2,015.00, 2,778.13 and 1,305.61 is: 1,800.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,015.00 : 2,778.13 = 1,305.61 : x
  2. Step 2: Convert to fraction form
    2,015.00/2,778.13 = 1,305.61/x
  3. Step 3: Cross multiply
    2,015.00x = 2,778.13 × 1,305.61
  4. Step 4: Simplify right side
    2,015.00x = 3,627,149.00
  5. Step 5: Solve for x
    x = 3,627,149.00/2,015.00
  6. Step 6: Final answer
    x = 1,800.08

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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.