Home / 3,246.40-4,867.20-1,787.20

Finding the Fourth Proportional to 3,246.40, 4,867.20 and 1,787.20

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Solution

The fourth proportional to 3,246.40, 4,867.20 and 1,787.20 is: 2,679.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,246.40 : 4,867.20 = 1,787.20 : x
  2. Step 2: Convert to fraction form
    3,246.40/4,867.20 = 1,787.20/x
  3. Step 3: Cross multiply
    3,246.40x = 4,867.20 × 1,787.20
  4. Step 4: Simplify right side
    3,246.40x = 8,698,659.84
  5. Step 5: Solve for x
    x = 8,698,659.84/3,246.40
  6. Step 6: Final answer
    x = 2,679.48

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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.