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Finding the Fourth Proportional to 1,693.45, 2,542.00 and 1,422.50

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Solution

The fourth proportional to 1,693.45, 2,542.00 and 1,422.50 is: 2,135.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,693.45 : 2,542.00 = 1,422.50 : x
  2. Step 2: Convert to fraction form
    1,693.45/2,542.00 = 1,422.50/x
  3. Step 3: Cross multiply
    1,693.45x = 2,542.00 × 1,422.50
  4. Step 4: Simplify right side
    1,693.45x = 3,615,997.80
  5. Step 5: Solve for x
    x = 3,615,997.80/1,693.45
  6. Step 6: Final answer
    x = 2,135.29

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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.