Home / 3,848.80-5,311.61-2,170.06

Finding the Fourth Proportional to 3,848.80, 5,311.61 and 2,170.06

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Solution

The fourth proportional to 3,848.80, 5,311.61 and 2,170.06 is: 2,994.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,848.80 : 5,311.61 = 2,170.06 : x
  2. Step 2: Convert to fraction form
    3,848.80/5,311.61 = 2,170.06/x
  3. Step 3: Cross multiply
    3,848.80x = 5,311.61 × 2,170.06
  4. Step 4: Simplify right side
    3,848.80x = 11,526,512.40
  5. Step 5: Solve for x
    x = 11,526,512.40/3,848.80
  6. Step 6: Final answer
    x = 2,994.83

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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.