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Finding the Fourth Proportional to 5,939.34, 8,909.36 and 1,778.91

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Solution

The fourth proportional to 5,939.34, 8,909.36 and 1,778.91 is: 2,668.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,939.34 : 8,909.36 = 1,778.91 : x
  2. Step 2: Convert to fraction form
    5,939.34/8,909.36 = 1,778.91/x
  3. Step 3: Cross multiply
    5,939.34x = 8,909.36 × 1,778.91
  4. Step 4: Simplify right side
    5,939.34x = 15,848,940.70
  5. Step 5: Solve for x
    x = 15,848,940.70/5,939.34
  6. Step 6: Final answer
    x = 2,668.47

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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.