Home / 2,857.83-4,286.88-1,126.32

Finding the Fourth Proportional to 2,857.83, 4,286.88 and 1,126.32

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Solution

The fourth proportional to 2,857.83, 4,286.88 and 1,126.32 is: 1,689.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,857.83 : 4,286.88 = 1,126.32 : x
  2. Step 2: Convert to fraction form
    2,857.83/4,286.88 = 1,126.32/x
  3. Step 3: Cross multiply
    2,857.83x = 4,286.88 × 1,126.32
  4. Step 4: Simplify right side
    2,857.83x = 4,828,398.68
  5. Step 5: Solve for x
    x = 4,828,398.68/2,857.83
  6. Step 6: Final answer
    x = 1,689.53

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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.