Home / 2,286.63-3,155.68-1,291.88

Finding the Fourth Proportional to 2,286.63, 3,155.68 and 1,291.88

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Solution

The fourth proportional to 2,286.63, 3,155.68 and 1,291.88 is: 1,782.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,286.63 : 3,155.68 = 1,291.88 : x
  2. Step 2: Convert to fraction form
    2,286.63/3,155.68 = 1,291.88/x
  3. Step 3: Cross multiply
    2,286.63x = 3,155.68 × 1,291.88
  4. Step 4: Simplify right side
    2,286.63x = 4,076,748.76
  5. Step 5: Solve for x
    x = 4,076,748.76/2,286.63
  6. Step 6: Final answer
    x = 1,782.87

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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.