Home / 4,138.72-5,712.75-2,650.64

Finding the Fourth Proportional to 4,138.72, 5,712.75 and 2,650.64

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Solution

The fourth proportional to 4,138.72, 5,712.75 and 2,650.64 is: 3,658.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,138.72 : 5,712.75 = 2,650.64 : x
  2. Step 2: Convert to fraction form
    4,138.72/5,712.75 = 2,650.64/x
  3. Step 3: Cross multiply
    4,138.72x = 5,712.75 × 2,650.64
  4. Step 4: Simplify right side
    4,138.72x = 15,142,415.10
  5. Step 5: Solve for x
    x = 15,142,415.10/4,138.72
  6. Step 6: Final answer
    x = 3,658.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.