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Finding the Fourth Proportional to 1,818.91, 2,728.62 and 585.91

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Solution

The fourth proportional to 1,818.91, 2,728.62 and 585.91 is: 878.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,818.91 : 2,728.62 = 585.91 : x
  2. Step 2: Convert to fraction form
    1,818.91/2,728.62 = 585.91/x
  3. Step 3: Cross multiply
    1,818.91x = 2,728.62 × 585.91
  4. Step 4: Simplify right side
    1,818.91x = 1,598,713.81
  5. Step 5: Solve for x
    x = 1,598,713.81/1,818.91
  6. Step 6: Final answer
    x = 878.94

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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.