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Finding the Fourth Proportional to 1,666.46, 2,500.60 and 936.09

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Solution

The fourth proportional to 1,666.46, 2,500.60 and 936.09 is: 1,404.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,666.46 : 2,500.60 = 936.09 : x
  2. Step 2: Convert to fraction form
    1,666.46/2,500.60 = 936.09/x
  3. Step 3: Cross multiply
    1,666.46x = 2,500.60 × 936.09
  4. Step 4: Simplify right side
    1,666.46x = 2,340,786.65
  5. Step 5: Solve for x
    x = 2,340,786.65/1,666.46
  6. Step 6: Final answer
    x = 1,404.65

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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.