Home / 2,115.24-3,173.42-929.35

Finding the Fourth Proportional to 2,115.24, 3,173.42 and 929.35

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Solution

The fourth proportional to 2,115.24, 3,173.42 and 929.35 is: 1,394.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,115.24 : 3,173.42 = 929.35 : x
  2. Step 2: Convert to fraction form
    2,115.24/3,173.42 = 929.35/x
  3. Step 3: Cross multiply
    2,115.24x = 3,173.42 × 929.35
  4. Step 4: Simplify right side
    2,115.24x = 2,949,217.88
  5. Step 5: Solve for x
    x = 2,949,217.88/2,115.24
  6. Step 6: Final answer
    x = 1,394.27

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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.