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Finding the Fourth Proportional to 10,866.50, 16,299.76 and 2,658.50

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Solution

The fourth proportional to 10,866.50, 16,299.76 and 2,658.50 is: 3,987.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,866.50 : 16,299.76 = 2,658.50 : x
  2. Step 2: Convert to fraction form
    10,866.50/16,299.76 = 2,658.50/x
  3. Step 3: Cross multiply
    10,866.50x = 16,299.76 × 2,658.50
  4. Step 4: Simplify right side
    10,866.50x = 43,332,911.96
  5. Step 5: Solve for x
    x = 43,332,911.96/10,866.50
  6. Step 6: Final answer
    x = 3,987.75

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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.