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Finding the Fourth Proportional to 3,639.98, 5,459.98 and 1,042.94

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Solution

The fourth proportional to 3,639.98, 5,459.98 and 1,042.94 is: 1,564.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,639.98 : 5,459.98 = 1,042.94 : x
  2. Step 2: Convert to fraction form
    3,639.98/5,459.98 = 1,042.94/x
  3. Step 3: Cross multiply
    3,639.98x = 5,459.98 × 1,042.94
  4. Step 4: Simplify right side
    3,639.98x = 5,694,431.54
  5. Step 5: Solve for x
    x = 5,694,431.54/3,639.98
  6. Step 6: Final answer
    x = 1,564.41

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1.5x scale

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.