Home / 3,258.31-4,888.38-1,311.88

Finding the Fourth Proportional to 3,258.31, 4,888.38 and 1,311.88

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Solution

The fourth proportional to 3,258.31, 4,888.38 and 1,311.88 is: 1,968.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,258.31 : 4,888.38 = 1,311.88 : x
  2. Step 2: Convert to fraction form
    3,258.31/4,888.38 = 1,311.88/x
  3. Step 3: Cross multiply
    3,258.31x = 4,888.38 × 1,311.88
  4. Step 4: Simplify right side
    3,258.31x = 6,412,967.95
  5. Step 5: Solve for x
    x = 6,412,967.95/3,258.31
  6. Step 6: Final answer
    x = 1,968.19

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.