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Finding the Fourth Proportional to 4,543.78, 6,811.08 and 1,620.49

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Solution

The fourth proportional to 4,543.78, 6,811.08 and 1,620.49 is: 2,429.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,543.78 : 6,811.08 = 1,620.49 : x
  2. Step 2: Convert to fraction form
    4,543.78/6,811.08 = 1,620.49/x
  3. Step 3: Cross multiply
    4,543.78x = 6,811.08 × 1,620.49
  4. Step 4: Simplify right side
    4,543.78x = 11,037,287.03
  5. Step 5: Solve for x
    x = 11,037,287.03/4,543.78
  6. Step 6: Final answer
    x = 2,429.10

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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.