Home / 3,066.80-4,232.14-2,815.75

Finding the Fourth Proportional to 3,066.80, 4,232.14 and 2,815.75

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Solution

The fourth proportional to 3,066.80, 4,232.14 and 2,815.75 is: 3,885.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,066.80 : 4,232.14 = 2,815.75 : x
  2. Step 2: Convert to fraction form
    3,066.80/4,232.14 = 2,815.75/x
  3. Step 3: Cross multiply
    3,066.80x = 4,232.14 × 2,815.75
  4. Step 4: Simplify right side
    3,066.80x = 11,916,648.21
  5. Step 5: Solve for x
    x = 11,916,648.21/3,066.80
  6. Step 6: Final answer
    x = 3,885.69

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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.