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Finding the Fourth Proportional to 5,356.80, 8,038.04 and 2,620.80

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Solution

The fourth proportional to 5,356.80, 8,038.04 and 2,620.80 is: 3,932.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,356.80 : 8,038.04 = 2,620.80 : x
  2. Step 2: Convert to fraction form
    5,356.80/8,038.04 = 2,620.80/x
  3. Step 3: Cross multiply
    5,356.80x = 8,038.04 × 2,620.80
  4. Step 4: Simplify right side
    5,356.80x = 21,066,095.23
  5. Step 5: Solve for x
    x = 21,066,095.23/5,356.80
  6. Step 6: Final answer
    x = 3,932.59

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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.