Home / 2,281.32-3,148.11-1,286.60

Finding the Fourth Proportional to 2,281.32, 3,148.11 and 1,286.60

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Solution

The fourth proportional to 2,281.32, 3,148.11 and 1,286.60 is: 1,775.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,281.32 : 3,148.11 = 1,286.60 : x
  2. Step 2: Convert to fraction form
    2,281.32/3,148.11 = 1,286.60/x
  3. Step 3: Cross multiply
    2,281.32x = 3,148.11 × 1,286.60
  4. Step 4: Simplify right side
    2,281.32x = 4,050,342.59
  5. Step 5: Solve for x
    x = 4,050,342.59/2,281.32
  6. Step 6: Final answer
    x = 1,775.44

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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.