Home / 2,867.52-3,973.92-2,815.68

Finding the Fourth Proportional to 2,867.52, 3,973.92 and 2,815.68

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Solution

The fourth proportional to 2,867.52, 3,973.92 and 2,815.68 is: 3,902.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,867.52 : 3,973.92 = 2,815.68 : x
  2. Step 2: Convert to fraction form
    2,867.52/3,973.92 = 2,815.68/x
  3. Step 3: Cross multiply
    2,867.52x = 3,973.92 × 2,815.68
  4. Step 4: Simplify right side
    2,867.52x = 11,189,287.07
  5. Step 5: Solve for x
    x = 11,189,287.07/2,867.52
  6. Step 6: Final answer
    x = 3,902.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.