Home / 3,086.88-4,260.80-2,039.20

Finding the Fourth Proportional to 3,086.88, 4,260.80 and 2,039.20

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Solution

The fourth proportional to 3,086.88, 4,260.80 and 2,039.20 is: 2,814.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,086.88 : 4,260.80 = 2,039.20 : x
  2. Step 2: Convert to fraction form
    3,086.88/4,260.80 = 2,039.20/x
  3. Step 3: Cross multiply
    3,086.88x = 4,260.80 × 2,039.20
  4. Step 4: Simplify right side
    3,086.88x = 8,688,623.36
  5. Step 5: Solve for x
    x = 8,688,623.36/3,086.88
  6. Step 6: Final answer
    x = 2,814.69

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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.