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Finding the Fourth Proportional to 3,470.46, 5,203.53 and 1,620.78

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Solution

The fourth proportional to 3,470.46, 5,203.53 and 1,620.78 is: 2,430.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,470.46 : 5,203.53 = 1,620.78 : x
  2. Step 2: Convert to fraction form
    3,470.46/5,203.53 = 1,620.78/x
  3. Step 3: Cross multiply
    3,470.46x = 5,203.53 × 1,620.78
  4. Step 4: Simplify right side
    3,470.46x = 8,433,777.35
  5. Step 5: Solve for x
    x = 8,433,777.35/3,470.46
  6. Step 6: Final answer
    x = 2,430.16

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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.