Home / 4,087.40-6,121.50-2,000.90

Finding the Fourth Proportional to 4,087.40, 6,121.50 and 2,000.90

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Solution

The fourth proportional to 4,087.40, 6,121.50 and 2,000.90 is: 2,996.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,087.40 : 6,121.50 = 2,000.90 : x
  2. Step 2: Convert to fraction form
    4,087.40/6,121.50 = 2,000.90/x
  3. Step 3: Cross multiply
    4,087.40x = 6,121.50 × 2,000.90
  4. Step 4: Simplify right side
    4,087.40x = 12,248,509.35
  5. Step 5: Solve for x
    x = 12,248,509.35/4,087.40
  6. Step 6: Final answer
    x = 2,996.65

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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.