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Finding the Fourth Proportional to 6,510.36, 9,770.79 and 3,391.32

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Solution

The fourth proportional to 6,510.36, 9,770.79 and 3,391.32 is: 5,089.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,510.36 : 9,770.79 = 3,391.32 : x
  2. Step 2: Convert to fraction form
    6,510.36/9,770.79 = 3,391.32/x
  3. Step 3: Cross multiply
    6,510.36x = 9,770.79 × 3,391.32
  4. Step 4: Simplify right side
    6,510.36x = 33,135,875.54
  5. Step 5: Solve for x
    x = 33,135,875.54/6,510.36
  6. Step 6: Final answer
    x = 5,089.71

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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.