Home / 2,917.80-4,020.81-2,076.15

Finding the Fourth Proportional to 2,917.80, 4,020.81 and 2,076.15

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Solution

The fourth proportional to 2,917.80, 4,020.81 and 2,076.15 is: 2,860.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,917.80 : 4,020.81 = 2,076.15 : x
  2. Step 2: Convert to fraction form
    2,917.80/4,020.81 = 2,076.15/x
  3. Step 3: Cross multiply
    2,917.80x = 4,020.81 × 2,076.15
  4. Step 4: Simplify right side
    2,917.80x = 8,347,804.68
  5. Step 5: Solve for x
    x = 8,347,804.68/2,917.80
  6. Step 6: Final answer
    x = 2,860.99

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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.