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Finding the Fourth Proportional to 1,898.59, 2,848.11 and 728.54

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Solution

The fourth proportional to 1,898.59, 2,848.11 and 728.54 is: 1,092.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,898.59 : 2,848.11 = 728.54 : x
  2. Step 2: Convert to fraction form
    1,898.59/2,848.11 = 728.54/x
  3. Step 3: Cross multiply
    1,898.59x = 2,848.11 × 728.54
  4. Step 4: Simplify right side
    1,898.59x = 2,074,975.89
  5. Step 5: Solve for x
    x = 2,074,975.89/1,898.59
  6. Step 6: Final answer
    x = 1,092.90

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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.