Home / 2,688.78-4,049.01-2,000.34

Finding the Fourth Proportional to 2,688.78, 4,049.01 and 2,000.34

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Solution

The fourth proportional to 2,688.78, 4,049.01 and 2,000.34 is: 3,012.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,688.78 : 4,049.01 = 2,000.34 : x
  2. Step 2: Convert to fraction form
    2,688.78/4,049.01 = 2,000.34/x
  3. Step 3: Cross multiply
    2,688.78x = 4,049.01 × 2,000.34
  4. Step 4: Simplify right side
    2,688.78x = 8,099,396.66
  5. Step 5: Solve for x
    x = 8,099,396.66/2,688.78
  6. Step 6: Final answer
    x = 3,012.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.