Home / 2,286.75-3,155.86-1,291.66

Finding the Fourth Proportional to 2,286.75, 3,155.86 and 1,291.66

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Solution

The fourth proportional to 2,286.75, 3,155.86 and 1,291.66 is: 1,782.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,286.75 : 3,155.86 = 1,291.66 : x
  2. Step 2: Convert to fraction form
    2,286.75/3,155.86 = 1,291.66/x
  3. Step 3: Cross multiply
    2,286.75x = 3,155.86 × 1,291.66
  4. Step 4: Simplify right side
    2,286.75x = 4,076,298.13
  5. Step 5: Solve for x
    x = 4,076,298.13/2,286.75
  6. Step 6: Final answer
    x = 1,782.57

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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.