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Finding the Fourth Proportional to 1,636.46, 2,453.40 and 814.29

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Solution

The fourth proportional to 1,636.46, 2,453.40 and 814.29 is: 1,220.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,636.46 : 2,453.40 = 814.29 : x
  2. Step 2: Convert to fraction form
    1,636.46/2,453.40 = 814.29/x
  3. Step 3: Cross multiply
    1,636.46x = 2,453.40 × 814.29
  4. Step 4: Simplify right side
    1,636.46x = 1,997,779.07
  5. Step 5: Solve for x
    x = 1,997,779.07/1,636.46
  6. Step 6: Final answer
    x = 1,220.79

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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.