Home / 3,231.78-4,848.30-1,257.40

Finding the Fourth Proportional to 3,231.78, 4,848.30 and 1,257.40

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Solution

The fourth proportional to 3,231.78, 4,848.30 and 1,257.40 is: 1,886.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,231.78 : 4,848.30 = 1,257.40 : x
  2. Step 2: Convert to fraction form
    3,231.78/4,848.30 = 1,257.40/x
  3. Step 3: Cross multiply
    3,231.78x = 4,848.30 × 1,257.40
  4. Step 4: Simplify right side
    3,231.78x = 6,096,252.42
  5. Step 5: Solve for x
    x = 6,096,252.42/3,231.78
  6. Step 6: Final answer
    x = 1,886.35

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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.