Home / 2,160.12-3,239.06-926.85

Finding the Fourth Proportional to 2,160.12, 3,239.06 and 926.85

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Solution

The fourth proportional to 2,160.12, 3,239.06 and 926.85 is: 1,389.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,160.12 : 3,239.06 = 926.85 : x
  2. Step 2: Convert to fraction form
    2,160.12/3,239.06 = 926.85/x
  3. Step 3: Cross multiply
    2,160.12x = 3,239.06 × 926.85
  4. Step 4: Simplify right side
    2,160.12x = 3,002,118.13
  5. Step 5: Solve for x
    x = 3,002,118.13/2,160.12
  6. Step 6: Final answer
    x = 1,389.79

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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.