Home / 3,859.68-5,326.34-2,091.28

Finding the Fourth Proportional to 3,859.68, 5,326.34 and 2,091.28

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Solution

The fourth proportional to 3,859.68, 5,326.34 and 2,091.28 is: 2,885.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,859.68 : 5,326.34 = 2,091.28 : x
  2. Step 2: Convert to fraction form
    3,859.68/5,326.34 = 2,091.28/x
  3. Step 3: Cross multiply
    3,859.68x = 5,326.34 × 2,091.28
  4. Step 4: Simplify right side
    3,859.68x = 11,138,868.32
  5. Step 5: Solve for x
    x = 11,138,868.32/3,859.68
  6. Step 6: Final answer
    x = 2,885.96

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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.