Home / 2,289.94-3,160.09-1,281.64

Finding the Fourth Proportional to 2,289.94, 3,160.09 and 1,281.64

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Solution

The fourth proportional to 2,289.94, 3,160.09 and 1,281.64 is: 1,768.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,289.94 : 3,160.09 = 1,281.64 : x
  2. Step 2: Convert to fraction form
    2,289.94/3,160.09 = 1,281.64/x
  3. Step 3: Cross multiply
    2,289.94x = 3,160.09 × 1,281.64
  4. Step 4: Simplify right side
    2,289.94x = 4,050,108.85
  5. Step 5: Solve for x
    x = 4,050,108.85/2,289.94
  6. Step 6: Final answer
    x = 1,768.66

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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.