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Finding the Fourth Proportional to 6,911.77, 9,539.79 and 4,393.39

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Solution

The fourth proportional to 6,911.77, 9,539.79 and 4,393.39 is: 6,063.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,911.77 : 9,539.79 = 4,393.39 : x
  2. Step 2: Convert to fraction form
    6,911.77/9,539.79 = 4,393.39/x
  3. Step 3: Cross multiply
    6,911.77x = 9,539.79 × 4,393.39
  4. Step 4: Simplify right side
    6,911.77x = 41,912,017.99
  5. Step 5: Solve for x
    x = 41,912,017.99/6,911.77
  6. Step 6: Final answer
    x = 6,063.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.