Home / 2,787.04-3,847.20-1,609.12

Finding the Fourth Proportional to 2,787.04, 3,847.20 and 1,609.12

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Solution

The fourth proportional to 2,787.04, 3,847.20 and 1,609.12 is: 2,221.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,787.04 : 3,847.20 = 1,609.12 : x
  2. Step 2: Convert to fraction form
    2,787.04/3,847.20 = 1,609.12/x
  3. Step 3: Cross multiply
    2,787.04x = 3,847.20 × 1,609.12
  4. Step 4: Simplify right side
    2,787.04x = 6,190,606.46
  5. Step 5: Solve for x
    x = 6,190,606.46/2,787.04
  6. Step 6: Final answer
    x = 2,221.21

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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.