Home / 3,759.18-5,186.73-2,166.30

Finding the Fourth Proportional to 3,759.18, 5,186.73 and 2,166.30

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Solution

The fourth proportional to 3,759.18, 5,186.73 and 2,166.30 is: 2,988.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,759.18 : 5,186.73 = 2,166.30 : x
  2. Step 2: Convert to fraction form
    3,759.18/5,186.73 = 2,166.30/x
  3. Step 3: Cross multiply
    3,759.18x = 5,186.73 × 2,166.30
  4. Step 4: Simplify right side
    3,759.18x = 11,236,013.20
  5. Step 5: Solve for x
    x = 11,236,013.20/3,759.18
  6. Step 6: Final answer
    x = 2,988.95

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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.