Home / 3,859.50-5,326.08-2,091.06

Finding the Fourth Proportional to 3,859.50, 5,326.08 and 2,091.06

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Solution

The fourth proportional to 3,859.50, 5,326.08 and 2,091.06 is: 2,885.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,859.50 : 5,326.08 = 2,091.06 : x
  2. Step 2: Convert to fraction form
    3,859.50/5,326.08 = 2,091.06/x
  3. Step 3: Cross multiply
    3,859.50x = 5,326.08 × 2,091.06
  4. Step 4: Simplify right side
    3,859.50x = 11,137,152.84
  5. Step 5: Solve for x
    x = 11,137,152.84/3,859.50
  6. Step 6: Final answer
    x = 2,885.65

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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.