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Finding the Fourth Proportional to 1,964.90, 2,946.98 and 794.84

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Solution

The fourth proportional to 1,964.90, 2,946.98 and 794.84 is: 1,192.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,964.90 : 2,946.98 = 794.84 : x
  2. Step 2: Convert to fraction form
    1,964.90/2,946.98 = 794.84/x
  3. Step 3: Cross multiply
    1,964.90x = 2,946.98 × 794.84
  4. Step 4: Simplify right side
    1,964.90x = 2,342,377.58
  5. Step 5: Solve for x
    x = 2,342,377.58/1,964.90
  6. Step 6: Final answer
    x = 1,192.11

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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.