Home / 4,135.92-5,708.28-2,808.72

Finding the Fourth Proportional to 4,135.92, 5,708.28 and 2,808.72

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Solution

The fourth proportional to 4,135.92, 5,708.28 and 2,808.72 is: 3,876.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,135.92 : 5,708.28 = 2,808.72 : x
  2. Step 2: Convert to fraction form
    4,135.92/5,708.28 = 2,808.72/x
  3. Step 3: Cross multiply
    4,135.92x = 5,708.28 × 2,808.72
  4. Step 4: Simplify right side
    4,135.92x = 16,032,960.20
  5. Step 5: Solve for x
    x = 16,032,960.20/4,135.92
  6. Step 6: Final answer
    x = 3,876.52

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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.