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Finding the Fourth Proportional to 2,642, 3,642.64 and 1,696.13

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Solution

The fourth proportional to 2,642, 3,642.64 and 1,696.13 is: 2,338.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,642 : 3,642.64 = 1,696.13 : x
  2. Step 2: Convert to fraction form
    2,642/3,642.64 = 1,696.13/x
  3. Step 3: Cross multiply
    2,642x = 3,642.64 × 1,696.13
  4. Step 4: Simplify right side
    2,642x = 6,178,390.98
  5. Step 5: Solve for x
    x = 6,178,390.98/2,642
  6. Step 6: Final answer
    x = 2,338.53

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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.