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Finding the Fourth Proportional to 1,772.40, 2,657.93 and 797.85

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Solution

The fourth proportional to 1,772.40, 2,657.93 and 797.85 is: 1,196.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,772.40 : 2,657.93 = 797.85 : x
  2. Step 2: Convert to fraction form
    1,772.40/2,657.93 = 797.85/x
  3. Step 3: Cross multiply
    1,772.40x = 2,657.93 × 797.85
  4. Step 4: Simplify right side
    1,772.40x = 2,120,625.46
  5. Step 5: Solve for x
    x = 2,120,625.46/1,772.40
  6. Step 6: Final answer
    x = 1,196.47

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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.