Home / 2,658.14-3,987.21-809.27

Finding the Fourth Proportional to 2,658.14, 3,987.21 and 809.27

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Solution

The fourth proportional to 2,658.14, 3,987.21 and 809.27 is: 1,213.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,658.14 : 3,987.21 = 809.27 : x
  2. Step 2: Convert to fraction form
    2,658.14/3,987.21 = 809.27/x
  3. Step 3: Cross multiply
    2,658.14x = 3,987.21 × 809.27
  4. Step 4: Simplify right side
    2,658.14x = 3,226,709.50
  5. Step 5: Solve for x
    x = 3,226,709.50/2,658.14
  6. Step 6: Final answer
    x = 1,213.90

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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.