Home / 3,390.42-5,077.50-2,153.96

Finding the Fourth Proportional to 3,390.42, 5,077.50 and 2,153.96

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Solution

The fourth proportional to 3,390.42, 5,077.50 and 2,153.96 is: 3,225.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,390.42 : 5,077.50 = 2,153.96 : x
  2. Step 2: Convert to fraction form
    3,390.42/5,077.50 = 2,153.96/x
  3. Step 3: Cross multiply
    3,390.42x = 5,077.50 × 2,153.96
  4. Step 4: Simplify right side
    3,390.42x = 10,936,731.90
  5. Step 5: Solve for x
    x = 10,936,731.90/3,390.42
  6. Step 6: Final answer
    x = 3,225.77

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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.