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Finding the Fourth Proportional to 7,960.54, 10,983.99 and 5,439.82

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Solution

The fourth proportional to 7,960.54, 10,983.99 and 5,439.82 is: 7,505.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,960.54 : 10,983.99 = 5,439.82 : x
  2. Step 2: Convert to fraction form
    7,960.54/10,983.99 = 5,439.82/x
  3. Step 3: Cross multiply
    7,960.54x = 10,983.99 × 5,439.82
  4. Step 4: Simplify right side
    7,960.54x = 59,750,928.48
  5. Step 5: Solve for x
    x = 59,750,928.48/7,960.54
  6. Step 6: Final answer
    x = 7,505.89

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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.