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Finding the Fourth Proportional to 3,664.82, 5,497.19 and 891.50

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Solution

The fourth proportional to 3,664.82, 5,497.19 and 891.50 is: 1,337.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,664.82 : 5,497.19 = 891.50 : x
  2. Step 2: Convert to fraction form
    3,664.82/5,497.19 = 891.50/x
  3. Step 3: Cross multiply
    3,664.82x = 5,497.19 × 891.50
  4. Step 4: Simplify right side
    3,664.82x = 4,900,717.40
  5. Step 5: Solve for x
    x = 4,900,717.40/3,664.82
  6. Step 6: Final answer
    x = 1,337.23

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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.