Home / 3,708.92-5,115.86-2,215.66

Finding the Fourth Proportional to 3,708.92, 5,115.86 and 2,215.66

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Solution

The fourth proportional to 3,708.92, 5,115.86 and 2,215.66 is: 3,056.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,708.92 : 5,115.86 = 2,215.66 : x
  2. Step 2: Convert to fraction form
    3,708.92/5,115.86 = 2,215.66/x
  3. Step 3: Cross multiply
    3,708.92x = 5,115.86 × 2,215.66
  4. Step 4: Simplify right side
    3,708.92x = 11,335,006.37
  5. Step 5: Solve for x
    x = 11,335,006.37/3,708.92
  6. Step 6: Final answer
    x = 3,056.15

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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.