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Finding the Fourth Proportional to 1,812.75, 2,499.30 and 1,546.65

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Solution

The fourth proportional to 1,812.75, 2,499.30 and 1,546.65 is: 2,132.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,812.75 : 2,499.30 = 1,546.65 : x
  2. Step 2: Convert to fraction form
    1,812.75/2,499.30 = 1,546.65/x
  3. Step 3: Cross multiply
    1,812.75x = 2,499.30 × 1,546.65
  4. Step 4: Simplify right side
    1,812.75x = 3,865,542.35
  5. Step 5: Solve for x
    x = 3,865,542.35/1,812.75
  6. Step 6: Final answer
    x = 2,132.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.