Home / 3,890.66-5,835.04-1,808.68

Finding the Fourth Proportional to 3,890.66, 5,835.04 and 1,808.68

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Solution

The fourth proportional to 3,890.66, 5,835.04 and 1,808.68 is: 2,712.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,890.66 : 5,835.04 = 1,808.68 : x
  2. Step 2: Convert to fraction form
    3,890.66/5,835.04 = 1,808.68/x
  3. Step 3: Cross multiply
    3,890.66x = 5,835.04 × 1,808.68
  4. Step 4: Simplify right side
    3,890.66x = 10,553,711.98
  5. Step 5: Solve for x
    x = 10,553,711.98/3,890.66
  6. Step 6: Final answer
    x = 2,712.58

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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.