Home / 5,402.88-8,102.34-2,628.72

Finding the Fourth Proportional to 5,402.88, 8,102.34 and 2,628.72

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Solution

The fourth proportional to 5,402.88, 8,102.34 and 2,628.72 is: 3,942.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,402.88 : 8,102.34 = 2,628.72 : x
  2. Step 2: Convert to fraction form
    5,402.88/8,102.34 = 2,628.72/x
  3. Step 3: Cross multiply
    5,402.88x = 8,102.34 × 2,628.72
  4. Step 4: Simplify right side
    5,402.88x = 21,298,783.20
  5. Step 5: Solve for x
    x = 21,298,783.20/5,402.88
  6. Step 6: Final answer
    x = 3,942.12

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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.