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Finding the Fourth Proportional to 1,713.97, 2,567.37 and 1,420.78

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Solution

The fourth proportional to 1,713.97, 2,567.37 and 1,420.78 is: 2,128.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,713.97 : 2,567.37 = 1,420.78 : x
  2. Step 2: Convert to fraction form
    1,713.97/2,567.37 = 1,420.78/x
  3. Step 3: Cross multiply
    1,713.97x = 2,567.37 × 1,420.78
  4. Step 4: Simplify right side
    1,713.97x = 3,647,648.01
  5. Step 5: Solve for x
    x = 3,647,648.01/1,713.97
  6. Step 6: Final answer
    x = 2,128.19

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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.