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Finding the Fourth Proportional to 6,928.32, 9,553.78 and 6,366.54

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Solution

The fourth proportional to 6,928.32, 9,553.78 and 6,366.54 is: 8,779.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,928.32 : 9,553.78 = 6,366.54 : x
  2. Step 2: Convert to fraction form
    6,928.32/9,553.78 = 6,366.54/x
  3. Step 3: Cross multiply
    6,928.32x = 9,553.78 × 6,366.54
  4. Step 4: Simplify right side
    6,928.32x = 60,824,522.52
  5. Step 5: Solve for x
    x = 60,824,522.52/6,928.32
  6. Step 6: Final answer
    x = 8,779.12

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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.