Home / 2,256.12-3,390.89-1,868.61

Finding the Fourth Proportional to 2,256.12, 3,390.89 and 1,868.61

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Solution

The fourth proportional to 2,256.12, 3,390.89 and 1,868.61 is: 2,808.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,256.12 : 3,390.89 = 1,868.61 : x
  2. Step 2: Convert to fraction form
    2,256.12/3,390.89 = 1,868.61/x
  3. Step 3: Cross multiply
    2,256.12x = 3,390.89 × 1,868.61
  4. Step 4: Simplify right side
    2,256.12x = 6,336,241.62
  5. Step 5: Solve for x
    x = 6,336,241.62/2,256.12
  6. Step 6: Final answer
    x = 2,808.47

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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.