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Finding the Fourth Proportional to 3,558.69, 5,338.17 and 961.63

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Solution

The fourth proportional to 3,558.69, 5,338.17 and 961.63 is: 1,442.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,558.69 : 5,338.17 = 961.63 : x
  2. Step 2: Convert to fraction form
    3,558.69/5,338.17 = 961.63/x
  3. Step 3: Cross multiply
    3,558.69x = 5,338.17 × 961.63
  4. Step 4: Simplify right side
    3,558.69x = 5,133,331.07
  5. Step 5: Solve for x
    x = 5,133,331.07/3,558.69
  6. Step 6: Final answer
    x = 1,442.48

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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.