Home / 4,107.20-5,672.16-3,166.40

Finding the Fourth Proportional to 4,107.20, 5,672.16 and 3,166.40

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Solution

The fourth proportional to 4,107.20, 5,672.16 and 3,166.40 is: 4,372.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,107.20 : 5,672.16 = 3,166.40 : x
  2. Step 2: Convert to fraction form
    4,107.20/5,672.16 = 3,166.40/x
  3. Step 3: Cross multiply
    4,107.20x = 5,672.16 × 3,166.40
  4. Step 4: Simplify right side
    4,107.20x = 17,960,327.42
  5. Step 5: Solve for x
    x = 17,960,327.42/4,107.20
  6. Step 6: Final answer
    x = 4,372.89

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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.