Home / 2,857.40-4,286.64-1,008.30

Finding the Fourth Proportional to 2,857.40, 4,286.64 and 1,008.30

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Solution

The fourth proportional to 2,857.40, 4,286.64 and 1,008.30 is: 1,512.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,857.40 : 4,286.64 = 1,008.30 : x
  2. Step 2: Convert to fraction form
    2,857.40/4,286.64 = 1,008.30/x
  3. Step 3: Cross multiply
    2,857.40x = 4,286.64 × 1,008.30
  4. Step 4: Simplify right side
    2,857.40x = 4,322,219.11
  5. Step 5: Solve for x
    x = 4,322,219.11/2,857.40
  6. Step 6: Final answer
    x = 1,512.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.