Home / 3,137.30-4,702.40-1,286.06

Finding the Fourth Proportional to 3,137.30, 4,702.40 and 1,286.06

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Solution

The fourth proportional to 3,137.30, 4,702.40 and 1,286.06 is: 1,927.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,137.30 : 4,702.40 = 1,286.06 : x
  2. Step 2: Convert to fraction form
    3,137.30/4,702.40 = 1,286.06/x
  3. Step 3: Cross multiply
    3,137.30x = 4,702.40 × 1,286.06
  4. Step 4: Simplify right side
    3,137.30x = 6,047,568.54
  5. Step 5: Solve for x
    x = 6,047,568.54/3,137.30
  6. Step 6: Final answer
    x = 1,927.63

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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.