Home / 2,787.10-4,173.90-1,485.70

Finding the Fourth Proportional to 2,787.10, 4,173.90 and 1,485.70

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Solution

The fourth proportional to 2,787.10, 4,173.90 and 1,485.70 is: 2,224.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,787.10 : 4,173.90 = 1,485.70 : x
  2. Step 2: Convert to fraction form
    2,787.10/4,173.90 = 1,485.70/x
  3. Step 3: Cross multiply
    2,787.10x = 4,173.90 × 1,485.70
  4. Step 4: Simplify right side
    2,787.10x = 6,201,163.23
  5. Step 5: Solve for x
    x = 6,201,163.23/2,787.10
  6. Step 6: Final answer
    x = 2,224.95

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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.