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Finding the Fourth Proportional to 1,699.75, 2,536.49 and 1,515.68

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Solution

The fourth proportional to 1,699.75, 2,536.49 and 1,515.68 is: 2,261.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,699.75 : 2,536.49 = 1,515.68 : x
  2. Step 2: Convert to fraction form
    1,699.75/2,536.49 = 1,515.68/x
  3. Step 3: Cross multiply
    1,699.75x = 2,536.49 × 1,515.68
  4. Step 4: Simplify right side
    1,699.75x = 3,844,486.90
  5. Step 5: Solve for x
    x = 3,844,486.90/1,699.75
  6. Step 6: Final answer
    x = 2,261.80

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.