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Finding the Fourth Proportional to 6,618.36, 9,855.57 and 6,545.64

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Solution

The fourth proportional to 6,618.36, 9,855.57 and 6,545.64 is: 9,747.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,618.36 : 9,855.57 = 6,545.64 : x
  2. Step 2: Convert to fraction form
    6,618.36/9,855.57 = 6,545.64/x
  3. Step 3: Cross multiply
    6,618.36x = 9,855.57 × 6,545.64
  4. Step 4: Simplify right side
    6,618.36x = 64,511,013.21
  5. Step 5: Solve for x
    x = 64,511,013.21/6,618.36
  6. Step 6: Final answer
    x = 9,747.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.