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Finding the Fourth Proportional to 2,592.66, 3,888.19 and 743.28

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Solution

The fourth proportional to 2,592.66, 3,888.19 and 743.28 is: 1,114.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,592.66 : 3,888.19 = 743.28 : x
  2. Step 2: Convert to fraction form
    2,592.66/3,888.19 = 743.28/x
  3. Step 3: Cross multiply
    2,592.66x = 3,888.19 × 743.28
  4. Step 4: Simplify right side
    2,592.66x = 2,889,994.42
  5. Step 5: Solve for x
    x = 2,889,994.42/2,592.66
  6. Step 6: Final answer
    x = 1,114.68

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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.