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Finding the Fourth Proportional to 2,802.62, 4,204.53 and 854.78

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Solution

The fourth proportional to 2,802.62, 4,204.53 and 854.78 is: 1,282.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,802.62 : 4,204.53 = 854.78 : x
  2. Step 2: Convert to fraction form
    2,802.62/4,204.53 = 854.78/x
  3. Step 3: Cross multiply
    2,802.62x = 4,204.53 × 854.78
  4. Step 4: Simplify right side
    2,802.62x = 3,593,927.13
  5. Step 5: Solve for x
    x = 3,593,927.13/2,802.62
  6. Step 6: Final answer
    x = 1,282.35

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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.