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Finding the Fourth Proportional to 5,640.54, 8,460.60 and 1,480.51

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Solution

The fourth proportional to 5,640.54, 8,460.60 and 1,480.51 is: 2,220.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,640.54 : 8,460.60 = 1,480.51 : x
  2. Step 2: Convert to fraction form
    5,640.54/8,460.60 = 1,480.51/x
  3. Step 3: Cross multiply
    5,640.54x = 8,460.60 × 1,480.51
  4. Step 4: Simplify right side
    5,640.54x = 12,526,002.91
  5. Step 5: Solve for x
    x = 12,526,002.91/5,640.54
  6. Step 6: Final answer
    x = 2,220.71

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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.