Home / 3,848.79-5,311.31-2,080.39

Finding the Fourth Proportional to 3,848.79, 5,311.31 and 2,080.39

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Solution

The fourth proportional to 3,848.79, 5,311.31 and 2,080.39 is: 2,870.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,848.79 : 5,311.31 = 2,080.39 : x
  2. Step 2: Convert to fraction form
    3,848.79/5,311.31 = 2,080.39/x
  3. Step 3: Cross multiply
    3,848.79x = 5,311.31 × 2,080.39
  4. Step 4: Simplify right side
    3,848.79x = 11,049,580.33
  5. Step 5: Solve for x
    x = 11,049,580.33/3,848.79
  6. Step 6: Final answer
    x = 2,870.93

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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.