Home / 7,923.38-11,887.70-2,658.91

Finding the Fourth Proportional to 7,923.38, 11,887.70 and 2,658.91

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Solution

The fourth proportional to 7,923.38, 11,887.70 and 2,658.91 is: 3,989.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,923.38 : 11,887.70 = 2,658.91 : x
  2. Step 2: Convert to fraction form
    7,923.38/11,887.70 = 2,658.91/x
  3. Step 3: Cross multiply
    7,923.38x = 11,887.70 × 2,658.91
  4. Step 4: Simplify right side
    7,923.38x = 31,608,324.41
  5. Step 5: Solve for x
    x = 31,608,324.41/7,923.38
  6. Step 6: Final answer
    x = 3,989.25

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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.