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Finding the Fourth Proportional to 1,794.40, 2,690.52 and 697.84

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Solution

The fourth proportional to 1,794.40, 2,690.52 and 697.84 is: 1,046.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,794.40 : 2,690.52 = 697.84 : x
  2. Step 2: Convert to fraction form
    1,794.40/2,690.52 = 697.84/x
  3. Step 3: Cross multiply
    1,794.40x = 2,690.52 × 697.84
  4. Step 4: Simplify right side
    1,794.40x = 1,877,552.48
  5. Step 5: Solve for x
    x = 1,877,552.48/1,794.40
  6. Step 6: Final answer
    x = 1,046.34

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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.