Home / 9,787.20-14,682.40-3,211.60

Finding the Fourth Proportional to 9,787.20, 14,682.40 and 3,211.60

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Solution

The fourth proportional to 9,787.20, 14,682.40 and 3,211.60 is: 4,817.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,787.20 : 14,682.40 = 3,211.60 : x
  2. Step 2: Convert to fraction form
    9,787.20/14,682.40 = 3,211.60/x
  3. Step 3: Cross multiply
    9,787.20x = 14,682.40 × 3,211.60
  4. Step 4: Simplify right side
    9,787.20x = 47,153,995.84
  5. Step 5: Solve for x
    x = 47,153,995.84/9,787.20
  6. Step 6: Final answer
    x = 4,817.93

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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.