Home / 5,134.72-7,702.08-2,172.39

Finding the Fourth Proportional to 5,134.72, 7,702.08 and 2,172.39

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Solution

The fourth proportional to 5,134.72, 7,702.08 and 2,172.39 is: 3,258.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,134.72 : 7,702.08 = 2,172.39 : x
  2. Step 2: Convert to fraction form
    5,134.72/7,702.08 = 2,172.39/x
  3. Step 3: Cross multiply
    5,134.72x = 7,702.08 × 2,172.39
  4. Step 4: Simplify right side
    5,134.72x = 16,731,910.71
  5. Step 5: Solve for x
    x = 16,731,910.71/5,134.72
  6. Step 6: Final answer
    x = 3,258.59

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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.