Home / 2,787.18-3,847.13-1,609.03

Finding the Fourth Proportional to 2,787.18, 3,847.13 and 1,609.03

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Solution

The fourth proportional to 2,787.18, 3,847.13 and 1,609.03 is: 2,220.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,787.18 : 3,847.13 = 1,609.03 : x
  2. Step 2: Convert to fraction form
    2,787.18/3,847.13 = 1,609.03/x
  3. Step 3: Cross multiply
    2,787.18x = 3,847.13 × 1,609.03
  4. Step 4: Simplify right side
    2,787.18x = 6,190,139.54
  5. Step 5: Solve for x
    x = 6,190,139.54/2,787.18
  6. Step 6: Final answer
    x = 2,220.94

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1.5x scale

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.