Home / 4,107.62-5,666.41-2,780.86

Finding the Fourth Proportional to 4,107.62, 5,666.41 and 2,780.86

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Solution

The fourth proportional to 4,107.62, 5,666.41 and 2,780.86 is: 3,836.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,107.62 : 5,666.41 = 2,780.86 : x
  2. Step 2: Convert to fraction form
    4,107.62/5,666.41 = 2,780.86/x
  3. Step 3: Cross multiply
    4,107.62x = 5,666.41 × 2,780.86
  4. Step 4: Simplify right side
    4,107.62x = 15,757,492.91
  5. Step 5: Solve for x
    x = 15,757,492.91/4,107.62
  6. Step 6: Final answer
    x = 3,836.16

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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.