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Finding the Fourth Proportional to 6,979.34, 9,632.63 and 5,388.30

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Solution

The fourth proportional to 6,979.34, 9,632.63 and 5,388.30 is: 7,436.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,979.34 : 9,632.63 = 5,388.30 : x
  2. Step 2: Convert to fraction form
    6,979.34/9,632.63 = 5,388.30/x
  3. Step 3: Cross multiply
    6,979.34x = 9,632.63 × 5,388.30
  4. Step 4: Simplify right side
    6,979.34x = 51,903,513.70
  5. Step 5: Solve for x
    x = 51,903,513.70/6,979.34
  6. Step 6: Final answer
    x = 7,436.73

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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.