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Finding the Fourth Proportional to 6,467.92, 8,908.02 and 5,583.40

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Solution

The fourth proportional to 6,467.92, 8,908.02 and 5,583.40 is: 7,689.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,467.92 : 8,908.02 = 5,583.40 : x
  2. Step 2: Convert to fraction form
    6,467.92/8,908.02 = 5,583.40/x
  3. Step 3: Cross multiply
    6,467.92x = 8,908.02 × 5,583.40
  4. Step 4: Simplify right side
    6,467.92x = 49,737,038.87
  5. Step 5: Solve for x
    x = 49,737,038.87/6,467.92
  6. Step 6: Final answer
    x = 7,689.80

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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.