Home / 2,688.68-4,029.54-2,168.91

Finding the Fourth Proportional to 2,688.68, 4,029.54 and 2,168.91

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Solution

The fourth proportional to 2,688.68, 4,029.54 and 2,168.91 is: 3,250.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,688.68 : 4,029.54 = 2,168.91 : x
  2. Step 2: Convert to fraction form
    2,688.68/4,029.54 = 2,168.91/x
  3. Step 3: Cross multiply
    2,688.68x = 4,029.54 × 2,168.91
  4. Step 4: Simplify right side
    2,688.68x = 8,739,709.60
  5. Step 5: Solve for x
    x = 8,739,709.60/2,688.68
  6. Step 6: Final answer
    x = 3,250.56

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1.5x scale

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.