Home / 3,859.47-5,326.08-2,091.09

Finding the Fourth Proportional to 3,859.47, 5,326.08 and 2,091.09

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Solution

The fourth proportional to 3,859.47, 5,326.08 and 2,091.09 is: 2,885.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,859.47 : 5,326.08 = 2,091.09 : x
  2. Step 2: Convert to fraction form
    3,859.47/5,326.08 = 2,091.09/x
  3. Step 3: Cross multiply
    3,859.47x = 5,326.08 × 2,091.09
  4. Step 4: Simplify right side
    3,859.47x = 11,137,312.63
  5. Step 5: Solve for x
    x = 11,137,312.63/3,859.47
  6. Step 6: Final answer
    x = 2,885.71

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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.