Home / 3,985.42-5,500.05-2,306.90

Finding the Fourth Proportional to 3,985.42, 5,500.05 and 2,306.90

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Solution

The fourth proportional to 3,985.42, 5,500.05 and 2,306.90 is: 3,183.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,985.42 : 5,500.05 = 2,306.90 : x
  2. Step 2: Convert to fraction form
    3,985.42/5,500.05 = 2,306.90/x
  3. Step 3: Cross multiply
    3,985.42x = 5,500.05 × 2,306.90
  4. Step 4: Simplify right side
    3,985.42x = 12,688,065.35
  5. Step 5: Solve for x
    x = 12,688,065.35/3,985.42
  6. Step 6: Final answer
    x = 3,183.62

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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.