Home / 2,860.22-3,945.87-2,020.79

Finding the Fourth Proportional to 2,860.22, 3,945.87 and 2,020.79

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Solution

The fourth proportional to 2,860.22, 3,945.87 and 2,020.79 is: 2,787.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,860.22 : 3,945.87 = 2,020.79 : x
  2. Step 2: Convert to fraction form
    2,860.22/3,945.87 = 2,020.79/x
  3. Step 3: Cross multiply
    2,860.22x = 3,945.87 × 2,020.79
  4. Step 4: Simplify right side
    2,860.22x = 7,973,774.64
  5. Step 5: Solve for x
    x = 7,973,774.64/2,860.22
  6. Step 6: Final answer
    x = 2,787.82

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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.