Home / 4,128.68-6,189.23-1,787.22

Finding the Fourth Proportional to 4,128.68, 6,189.23 and 1,787.22

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Solution

The fourth proportional to 4,128.68, 6,189.23 and 1,787.22 is: 2,679.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,128.68 : 6,189.23 = 1,787.22 : x
  2. Step 2: Convert to fraction form
    4,128.68/6,189.23 = 1,787.22/x
  3. Step 3: Cross multiply
    4,128.68x = 6,189.23 × 1,787.22
  4. Step 4: Simplify right side
    4,128.68x = 11,061,520.11
  5. Step 5: Solve for x
    x = 11,061,520.11/4,128.68
  6. Step 6: Final answer
    x = 2,679.19

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1.5x scale

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.