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Finding the Fourth Proportional to 6,979.53, 9,626.13 and 4,321.92

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Solution

The fourth proportional to 6,979.53, 9,626.13 and 4,321.92 is: 5,960.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,979.53 : 9,626.13 = 4,321.92 : x
  2. Step 2: Convert to fraction form
    6,979.53/9,626.13 = 4,321.92/x
  3. Step 3: Cross multiply
    6,979.53x = 9,626.13 × 4,321.92
  4. Step 4: Simplify right side
    6,979.53x = 41,603,363.77
  5. Step 5: Solve for x
    x = 41,603,363.77/6,979.53
  6. Step 6: Final answer
    x = 5,960.77

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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.