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Finding the Fourth Proportional to 3,555.53, 5,329.16 and 1,682.61

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Solution

The fourth proportional to 3,555.53, 5,329.16 and 1,682.61 is: 2,521.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,555.53 : 5,329.16 = 1,682.61 : x
  2. Step 2: Convert to fraction form
    3,555.53/5,329.16 = 1,682.61/x
  3. Step 3: Cross multiply
    3,555.53x = 5,329.16 × 1,682.61
  4. Step 4: Simplify right side
    3,555.53x = 8,966,902.11
  5. Step 5: Solve for x
    x = 8,966,902.11/3,555.53
  6. Step 6: Final answer
    x = 2,521.96

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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.