Home / 2,727.30-4,083.39-1,987.77

Finding the Fourth Proportional to 2,727.30, 4,083.39 and 1,987.77

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Solution

The fourth proportional to 2,727.30, 4,083.39 and 1,987.77 is: 2,976.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,727.30 : 4,083.39 = 1,987.77 : x
  2. Step 2: Convert to fraction form
    2,727.30/4,083.39 = 1,987.77/x
  3. Step 3: Cross multiply
    2,727.30x = 4,083.39 × 1,987.77
  4. Step 4: Simplify right side
    2,727.30x = 8,116,840.14
  5. Step 5: Solve for x
    x = 8,116,840.14/2,727.30
  6. Step 6: Final answer
    x = 2,976.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.