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Finding the Fourth Proportional to 1,698.31, 2,342.49 and 1,641.16

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Solution

The fourth proportional to 1,698.31, 2,342.49 and 1,641.16 is: 2,263.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,698.31 : 2,342.49 = 1,641.16 : x
  2. Step 2: Convert to fraction form
    1,698.31/2,342.49 = 1,641.16/x
  3. Step 3: Cross multiply
    1,698.31x = 2,342.49 × 1,641.16
  4. Step 4: Simplify right side
    1,698.31x = 3,844,398.53
  5. Step 5: Solve for x
    x = 3,844,398.53/1,698.31
  6. Step 6: Final answer
    x = 2,263.66

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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.