Home / 3,020.56-4,171.54-2,078.79

Finding the Fourth Proportional to 3,020.56, 4,171.54 and 2,078.79

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Solution

The fourth proportional to 3,020.56, 4,171.54 and 2,078.79 is: 2,870.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,020.56 : 4,171.54 = 2,078.79 : x
  2. Step 2: Convert to fraction form
    3,020.56/4,171.54 = 2,078.79/x
  3. Step 3: Cross multiply
    3,020.56x = 4,171.54 × 2,078.79
  4. Step 4: Simplify right side
    3,020.56x = 8,671,739.98
  5. Step 5: Solve for x
    x = 8,671,739.98/3,020.56
  6. Step 6: Final answer
    x = 2,870.90

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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.