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Finding the Fourth Proportional to 1,821.76, 2,732.88 and 589.54

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Solution

The fourth proportional to 1,821.76, 2,732.88 and 589.54 is: 884.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,821.76 : 2,732.88 = 589.54 : x
  2. Step 2: Convert to fraction form
    1,821.76/2,732.88 = 589.54/x
  3. Step 3: Cross multiply
    1,821.76x = 2,732.88 × 589.54
  4. Step 4: Simplify right side
    1,821.76x = 1,611,142.08
  5. Step 5: Solve for x
    x = 1,611,142.08/1,821.76
  6. Step 6: Final answer
    x = 884.39

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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.