Home / 4,787.60-7,181.40-3,135.20

Finding the Fourth Proportional to 4,787.60, 7,181.40 and 3,135.20

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Solution

The fourth proportional to 4,787.60, 7,181.40 and 3,135.20 is: 4,702.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,787.60 : 7,181.40 = 3,135.20 : x
  2. Step 2: Convert to fraction form
    4,787.60/7,181.40 = 3,135.20/x
  3. Step 3: Cross multiply
    4,787.60x = 7,181.40 × 3,135.20
  4. Step 4: Simplify right side
    4,787.60x = 22,515,125.28
  5. Step 5: Solve for x
    x = 22,515,125.28/4,787.60
  6. Step 6: Final answer
    x = 4,702.80

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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.