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Finding the Fourth Proportional to 3,528.55, 4,869.28 and 1,956.54

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Solution

The fourth proportional to 3,528.55, 4,869.28 and 1,956.54 is: 2,699.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,528.55 : 4,869.28 = 1,956.54 : x
  2. Step 2: Convert to fraction form
    3,528.55/4,869.28 = 1,956.54/x
  3. Step 3: Cross multiply
    3,528.55x = 4,869.28 × 1,956.54
  4. Step 4: Simplify right side
    3,528.55x = 9,526,941.09
  5. Step 5: Solve for x
    x = 9,526,941.09/3,528.55
  6. Step 6: Final answer
    x = 2,699.96

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.