Home / 5,220.08-7,819.67-3,138.93

Finding the Fourth Proportional to 5,220.08, 7,819.67 and 3,138.93

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Solution

The fourth proportional to 5,220.08, 7,819.67 and 3,138.93 is: 4,702.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,220.08 : 7,819.67 = 3,138.93 : x
  2. Step 2: Convert to fraction form
    5,220.08/7,819.67 = 3,138.93/x
  3. Step 3: Cross multiply
    5,220.08x = 7,819.67 × 3,138.93
  4. Step 4: Simplify right side
    5,220.08x = 24,545,407.49
  5. Step 5: Solve for x
    x = 24,545,407.49/5,220.08
  6. Step 6: Final answer
    x = 4,702.12

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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.