Home / 3,787.10-5,225.00-2,987.90

Finding the Fourth Proportional to 3,787.10, 5,225.00 and 2,987.90

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Solution

The fourth proportional to 3,787.10, 5,225.00 and 2,987.90 is: 4,122.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,787.10 : 5,225.00 = 2,987.90 : x
  2. Step 2: Convert to fraction form
    3,787.10/5,225.00 = 2,987.90/x
  3. Step 3: Cross multiply
    3,787.10x = 5,225.00 × 2,987.90
  4. Step 4: Simplify right side
    3,787.10x = 15,611,736.44
  5. Step 5: Solve for x
    x = 15,611,736.44/3,787.10
  6. Step 6: Final answer
    x = 4,122.35

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.